Question

Multiply (4x + 7)^2.

16x^2 + 49
16x^2 + 28x + 49
16x^2 + 56x + 49
8x^2 + 14

Answer 1

(4x + 7) ^2 =
(4x + 7)(4x + 7)
do you know the FOIL method ?

Answer 2

To solve this I would do (4x + 7)(4x + 7) Correct?

Answer 3

yes

Answer 4

I know how to do it, kind of.. Walk em through it?

Answer 5

me*

Answer 6

It would be 4x times 4x then 4x times 7?

Answer 7

(4x + 7)(4x + 7)
using FOIL -- first,outside,inside,last)

First -- multiply first terms in each set....4x * 4x = 16x^2
Outside -- multiply outside terms in each set...4x * 7 = 28x
Inside -- multiply inside terms in each set...7 * 4x = 28x
Last -- multiply last terms in each set...7 * 7 = 49
put it all together....16x^2 + 28x + 28x + 49 -- combine like terms
16x^2 + 56x + 49
questions ?

Answer 8

Nope, I got it, thank you!

Answer 9

anytime :)