Question

simplify the cubed root of 64x^5 y^7

Answer 1

cubed root is the same as the power of (1/3). distribute the exponent of 1/3 to each
so
64^(1/3) x^(5/3) y^7/3
which is
4 x^(5/3) y^7/3
or
4(x^5 y^7)^(1/3)