How do you simplify $(-mn^8)^3$ ?

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Answer 1 · 2016-09-15T19:32:12

$-27m^3n^24$

$(-3mn^8)^3 = (-3mn^8)xx(-3mn^8)xx(-3mn^8)$

Work it out by looking at:

the signs $rarr$ the answer will be negative
the numbers $rarr 3^3 = 27$
the indices $rarrm^3 n^24$

$(-3mn^8)^3 = -27m^3n^24$

How do you simplify (-mn^8)^3 (-mn^8)^3?