Question

What is the value of the expression when a = –4 and b = 5?
(a+2b)^3 + 3a^2

A.
–952







B.
168







C.
–348







D.
264
@lacrosseplayer22 @Dscdago

Answer 1

OO. Gurl. did you substitute the numbers in for the variables?

Answer 2

no .-. I just did a huge problem kinda like this but im stuck all over again

Answer 3

Substitute the numbers. So it looks like (-4+2(5))^3+3(-4)^2

Answer 4

simply plug in a--4 b=5

you will get result i.e.264

Answer 5

see it below how to do...

Answer 6

so D?

Answer 7

\[(-4+2(5))^3+3(-2)^2\]

Answer 8

Correct. D it is.

Answer 9

(-4+5*2)^3+3(-4)^2=(-4+10)^3+3(16)=6^3+48=216+48=264