Ответ с решением 1) ⁵ √ -32. 2) ³ √ 64 3) ⁴ √81/625. 4) ⁴ √81/256 5) ⁴ √10000. 6) ⁶ √9•81 7) ⁴ √81•16. 8) ⁴ √0,0625 9)⁶√64000000. 10) ⁴√16•625 11) ³ √8•343. 12) ⁵ √27• ⁵ √9 13)⁴√128/⁴√8. 14) ⁴ √48•27 15)³√-25•⁶√25. 16) ⁶ √128/⁶ √2 17)⁵√3¹⁰•2¹⁵. 18) ⁵ √-7• ⁵ √49• ⁵ √49 19)⁵√-243/1024• ³ √-4 17/27 20) ⁴ √3 3/8•1 1/2+⁴√5/⁴√80 21) ⁴√54• ⁴√120/⁴√5. 22)⁴√32/⁴√2+⁶√27²-√³√64 23) ³ √3 3/8+ ⁴ √18• ⁴ √4 1/2-√ √256 24) ⁴ √17-√33• ⁴ √17 +√33 25) ⁴ √9-√65• ⁴ √9+ √65 26) √3-√5• √3+ √5

Лебедев Дмитрий Сергеевич

Учитель математики

Проверено учителем

Для решения данных выражений воспользуемся основными свойствами корней nn-й степени: abn=anbnthe n-th root of a center dot b end-root equals the n-th root of a end-root center dot the n-th root of b end-root , abn=anbnthe n-th root of a over b end-fraction end-root equals the fraction with numerator the n-th root of a end-root and denominator the n-th root of b end-root end-fraction , (an)m=amnopen paren the n-th root of a end-root close paren to the m-th power equals the n-th root of a to the m-th power end-root , а также формулой разности квадратов (ab)(a+b)=a2b2open paren a minus b close paren open paren a plus b close paren equals a squared minus b squared. Результаты вычислений: 1) -2; 2) 4; 3) 0,6; 4) 0,75; 5) 10; 6) 3; 7) 6; 8) 0,5; 9) 20; 10) 10; 11) 14; 12) 3; 13) 2; 14) 6; 15) -5; 16) 2; 17) 72; 18) -7; 19) 1,25; 20) 2; 21) 6; 22) 3; 23) 0,5; 24) 4; 25) 2; 26) 2. ️ Шаг 1: Вычисление базовых корней (задания 1–11)

  1. -325=(-2)55=-2the fifth root of negative 32 end-root equals the fifth root of open paren negative 2 close paren to the fifth power end-root equals negative 2 643=433=4the cube root of 64 end-root equals the cube root of 4 cubed end-root equals 4 816254=8146254=35=0,6the fourth root of 81 over 625 end-fraction end-root equals the fraction with numerator the fourth root of 81 end-root and denominator the fourth root of 625 end-root end-fraction equals three-fifths equals 0 comma 6 812564=34=0,75the fourth root of 81 over 256 end-fraction end-root equals three-fourths equals 0 comma 75 100004=1044=10the fourth root of 10000 end-root equals the fourth root of 10 to the fourth power end-root equals 10 9816=32346=366=3the sixth root of 9 center dot 81 end-root equals the sixth root of 3 squared center dot 3 to the fourth power end-root equals the sixth root of 3 to the sixth power end-root equals 3 81164=32=6the fourth root of 81 center dot 16 end-root equals 3 center dot 2 equals 6 0,06254=(0,5)44=0,5the fourth root of 0 comma 0625 end-root equals the fourth root of open paren 0 comma 5 close paren to the fourth power end-root equals 0 comma 5 640000006=641066=210=20the sixth root of 64000000 end-root equals the sixth root of 64 center dot 10 to the sixth power end-root equals 2 center dot 10 equals 20 166254=25=10the fourth root of 16 center dot 625 end-root equals 2 center dot 5 equals 10 83433=27=14the cube root of 8 center dot 343 end-root equals 2 center dot 7 equals 14

️ Шаг 2: Применение свойств умножения и деления корней (задания 12–16)

  1. 27595=33325=355=3the fifth root of 27 end-root center dot the fifth root of 9 end-root equals the fifth root of 3 cubed center dot 3 squared end-root equals the fifth root of 3 to the fifth power end-root equals 3 128484=12884=164=2the fraction with numerator the fourth root of 128 end-root and denominator the fourth root of 8 end-root end-fraction equals the fourth root of 128 over 8 end-fraction end-root equals the fourth root of 16 end-root equals 2 48274=163334=16344=23=6the fourth root of 48 center dot 27 end-root equals the fourth root of 16 center dot 3 center dot 3 cubed end-root equals the fourth root of 16 center dot 3 to the fourth power end-root equals 2 center dot 3 equals 6 -253256=523526=-523526=-523+13=-51=-5the cube root of negative 25 end-root center dot the sixth root of 25 end-root equals negative the cube root of 5 squared end-root center dot the sixth root of 5 squared end-root equals negative 5 raised to the two-thirds power center dot 5 raised to the two-sixths power equals negative 5 raised to the two-thirds plus one-third power equals negative 5 to the first power equals negative 5 128626=646=2the fraction with numerator the sixth root of 128 end-root and denominator the sixth root of 2 end-root end-fraction equals the sixth root of 64 end-root equals 2

️ Шаг 3: Сложные выражения и степени (задания 17–21)

  1. 3102155=31052155=3223=98=72the fifth root of 3 to the tenth power center dot 2 to the 15th power end-root equals 3 raised to the ten-fifths power center dot 2 raised to the fifteen-fifths power equals 3 squared center dot 2 cubed equals 9 center dot 8 equals 72 -75495495=-772725=-755=-7the fifth root of negative 7 end-root center dot the fifth root of 49 end-root center dot the fifth root of 49 end-root equals the fifth root of negative 7 center dot 7 squared center dot 7 squared end-root equals the fifth root of negative 7 to the fifth power end-root equals negative 7 24310245-417273=(34)125273=(34)(53)=54=1,25the fifth root of negative 243 over 1024 end-fraction end-root center dot the cube root of negative 4 and 17 over 27 end-fraction end-root equals open paren negative three-fourths close paren center dot the cube root of negative 125 over 27 end-fraction end-root equals open paren negative three-fourths close paren center dot open paren negative five-thirds close paren equals five-fourths equals 1 comma 25 278324+5804=81164+1164=32+12=2the fourth root of 27 over 8 end-fraction center dot three-halves end-root plus the fourth root of 5 over 80 end-fraction end-root equals the fourth root of 81 over 16 end-fraction end-root plus the fourth root of 1 over 16 end-fraction end-root equals three-halves plus one-half equals 2 544120454=5412054=54244=227384=81164=32=6the fraction with numerator the fourth root of 54 end-root center dot the fourth root of 120 end-root and denominator the fourth root of 5 end-root end-fraction equals the fourth root of the fraction with numerator 54 center dot 120 and denominator 5 end-fraction end-root equals the fourth root of 54 center dot 24 end-root equals the fourth root of 2 center dot 27 center dot 3 center dot 8 end-root equals the fourth root of 81 center dot 16 end-root equals 3 center dot 2 equals 6

️ Шаг 4: Вычисления с вложенными корнями и ФСУ (задания 22–26)

  1. 3224+(33)26643=164+3646=2+32=3the fourth root of 32 over 2 end-fraction end-root plus the sixth root of open paren 3 cubed close paren squared end-root minus the square root of the cube root of 64 end-root end-root equals the fourth root of 16 end-root plus 3 minus the sixth root of 64 end-root equals 2 plus 3 minus 2 equals 3 2783+18924256=32+8142564=1,5+34=0,5the cube root of 27 over 8 end-fraction end-root plus the fourth root of 18 center dot nine-halves end-root minus the square root of the square root of 256 end-root end-root equals three-halves plus the fourth root of 81 end-root minus the fourth root of 256 end-root equals 1 comma 5 plus 3 minus 4 equals 0 comma 5 (1733)(17+33)4=172334=289334=2564=4the fourth root of open paren 17 minus the square root of 33 end-root close paren open paren 17 plus the square root of 33 end-root close paren end-root equals the fourth root of 17 squared minus 33 end-root equals the fourth root of 289 minus 33 end-root equals the fourth root of 256 end-root equals 4 (965)(9+65)4=81654=164=2the fourth root of open paren 9 minus the square root of 65 end-root close paren open paren 9 plus the square root of 65 end-root close paren end-root equals the fourth root of 81 minus 65 end-root equals the fourth root of 16 end-root equals 2 (35)(3+5)=95=4=2the square root of open paren 3 minus the square root of 5 end-root close paren open paren 3 plus the square root of 5 end-root close paren end-root equals the square root of 9 minus 5 end-root equals the square root of 4 end-root equals 2

Ответ:

  1. -2; 2) 4; 3) 0,6; 4) 0,75; 5) 10; 6) 3; 7) 6; 8) 0,5; 9) 20; 10) 10; 11) 14; 12) 3; 13) 2; 14) 6; 15) -5; 16) 2; 17) 72; 18) -7; 19) 1,25; 20) 2; 21) 6; 22) 3; 23) 0,5; 24) 4; 25) 2; 26) 2.

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