Question

What is y = (x − 3)(4x + 2) written in standard form?

Answer 1

FOIL

Answer 2

ok uh... hold on

Answer 3

Then combine like-terms.

Answer 4

y=4x^2 + 2x - 7x - 6

then

y=4x^2 - 5x - 6 ?

Answer 5

y = x(4x + 2) - 3(4x + 2) = 4x^2 + 2x - 12x - 6 = 4x^2 - 10x - 6

Answer 6

10x?

Answer 7

Yeah, I got 4x^2-10x-6. You must have multiplied two terms together wrong.

Answer 8

huh...

explain that to me please

Answer 9

\[(x-3)(4x-12)=4x^2+2x-12x-6\]

Answer 10

@brittanny_, I showed you the steps

Answer 11

Combine \[2x-12x\] to get \[-10x\]

Answer 12

ok that makes sense now. thanks!

Answer 13

y
= (x - 3)(4x + 2)
= x(4x + 2) - 3(4x + 2)
= 4x^2 + 2x - 12x - 6
= 4x^2 - 10x - 6

Answer 14

@britanny_
analyze that for a minute until you understand it.

Answer 15

It's just the distributive property, which is the same thing as FOIL

Answer 16

You must have added \[-3\] and \[4x\] instead of multiplying them together to get \[12x\]

Answer 17

okay that makes sense. thank you!

Answer 18

ah yeah i did do that...

Answer 19

urg! i wanna give both of you medals!