Ihave no idea what im doing someone pls! due soon

ok so we know that 49 stays the same.

_(x + _)^2+ 49

So 4 and 28 both have a factor of 4 right? If we take out the 4 we get

4(x^2 + 7x) + 49

Hmm Oh wait we can take out an x!!

4x(x + 7) + 49

That's your answer!

29.5977692753

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb