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NotSoSmart Feb 1, 2018

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5. 9^1/3 * 81¹^/3 = ( 9 * 81 )^1/3 = ( 9 * 9 * 9 )^1/3 = (9³)^1/3 = 9^3/3 = 9¹ = 9

6. $\frac{8}{\sqrt[7]{x^{15}}}\,=\,\frac{8}{x^{\frac{15}{7}}}\,=\,8x^{-\frac{15}{7}}$

hectictar Feb 1, 2018

hectictar · Answer 1 · 2018-02-01T08:48:14

5. 9^1/3 * 81¹^/3 = ( 9 * 81 )^1/3 = ( 9 * 9 * 9 )^1/3 = (9³)^1/3 = 9^3/3 = 9¹ = 9

6. $\frac{8}{\sqrt[7]{x^{15}}}\,=\,\frac{8}{x^{\frac{15}{7}}}\,=\,8x^{-\frac{15}{7}}$