How do you simplify 125^(2/9) * 125^(1/9) / 5^(1/4)?

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1 Answer
Apr 21, 2018

5^(3/4)

Explanation:

=> 125^(2/9) cdot (125^(1/9))/5^(1/4)

=> 5^(3 × 2/9) cdot (5^(3 × 1/9))/5^(1/4) color(white)(...)[∵ 125 = 5^3]

=> 5^(2/3) cdot 5^(1/3) / 5^(1/4)

=> (5^(2/3 + 1/3))/5^(1/4) color(white)(...)[∵ a^x a^y = a^(x + y)]

=> 5^(3/3) / 5^(1/4)

=> 5 / 5^(1/4)

=> 5 cdot 5^(-1/4) color(white)(...)[∵ 1/a^x = a^(-x)]

=> 5^(1 - 1/4)

=> 5^(3/4)