Question

What is the value of the expression when a = –4 and b = 5?

(a+2b)3 + 3a 2
A.
–348

B.
264

C.
–952

D.
168
Please Help me ASAP

Answer 1

`(a+2b)^3 + 3a^2\\\\=(-4+2(5))^3 + 3(-4)^2\\\\=(-4+10)^3 +3(16)\\\\=6^3 + 3(16)\\\\=216 + 48\\\\=\boxed{\bf{264}}`

Your answer is B) 264.