Simplify cube root of -81x^10y^8

Rewrite -81x10y8 as (-3x3y2)3⋅(3xy2).
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Factor -27 out of -81.
Rewrite -27 as (-3)3.
Factor out x9.
Rewrite x9 as (x3)3.
Factor out y6.
Rewrite y6 as (y2)3.
Move x.
Move 3.
Rewrite ((-3)3((x3)3))(y2)3 as (-3x3y2)3.
Add parentheses.
Add parentheses.
Pull terms out from under the radical.
Simplify cube root of -81x^10y^8

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