Question

(3x^4y)(5x^2y^6)
x=2
y=-1

Answer 1

Just plug it in.

[3(2)^4(-1)][5(2)^2(-1)^6]

Answer 2

Now what?

Answer 3

i did

Answer 4

\[[3(2)^4(-1)][5(2)^2(-1)^6]\]