Since the index is three, find for their cube root.
·The cube root of -1000 is -10
·The cube root of x⁶ is x²
*How did we get x
² ? Just simply divide the exponent of the variable inside by the index so 6 divided by 3 is 2, then just copy the variable so we got x
·The cube root of y¹² is y⁴
Combine them all, so the answer is -10x²y⁴