Question

. Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression.
(-2x9^y^4)^4

Answer 1

use the index rule \[(x^a)^b = x^{a \times b}\]

so your problem is

\[(-2x^9 y^4)^4 = (-2)^4 \times x^{9 \times 4} \times y^{4\times4}\]

I'll leave it to you to finish