MATHEMATICS PROBLEM SOLVER

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Tuesday, 15 November 2016

EXPONENTIALS 5

Simplify 23

8^-2/3

Solution

= 23

8^-2/3

= 23 x 1

8^-2/3

= 23 x 8^2/3 [Since 1/a^-n = aⁿ]

= 23 x (8^1/3)² [Since 8^1/3 = cube root of 8 = 2]

= 23 x (2)²

= 23 x 4

= 92

Hence 23 = 92

8^-2/3

TRY THIS…..

simplify 20

125^-2/3

MATHEMATICS PROBLEM SOLVER

Tuesday, 15 November 2016

EXPONENTIALS 5

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