Question

(-3x^5y^4)^2 * -2^2x^3y^7

Answer 1

(-3x^20y)^2 * -2^2x^21y
-3x^40y * -2^42xy

That's the best I can simplify it.

Answer 2

is that same expresstion as \[(-3x ^{5}y ^{4})^{2}\times(-2)^{2}x ^{3}y ^{7}\] ??

Answer 3

36x^13y^15