Question

3v^2+2v-21

Answer 1

=(3v - 7)(v + 3)

Answer 2

i have a question

Answer 3

the numbers have to add to middle and multiply the end but -7+3 doesn't equal 2?? I'm confused lol

Answer 4

you dont add you multiply

Answer 5

that's because it's not -7 and 3, it's really 9-7

Answer 6

it is -7 * 3 which is -21

Answer 7

Here's the check:


(3v - 7)(v + 3)


3v^2+9v-7v-21


3v^2+2v-21

Answer 8

where did the 9v come from?

Answer 9

3v*3 = 9v (first*last)

Answer 10

ahhh ok