Expand algebra two problem

Question

Expand: (−5ℎ5−4)2

Answer 1

(-5h^5 -4)^2 = (-5h^5 - 4)(-5h^5 -4) use FOIL to get

1st term squared plus twice 1st term times 2nd time + last term squared

(a+b)^2 = a^2 + 2ab + b^2 where a=-5h^2 and b = -4

= 25h^10 + 40h^5 + 16