Ask your own question, for FREE!
Mathematics 17 Online
OpenStudy (anonymous):

Factoring Trinomials with Negative Numbers x2 + x – 12 6. x2 – 2x – 8

OpenStudy (anonymous):

If you FOIL (x+4)(x-3) what do you get?

OpenStudy (anonymous):

ok thnk

OpenStudy (anonymous):

u got it? great!

OpenStudy (anonymous):

#6 is kinda hard in a way

OpenStudy (anonymous):

you need factors of -8 that sum to -2

OpenStudy (anonymous):

-1*8 1*-8 -2*4 2*-4

OpenStudy (anonymous):

which pair adds up to -2?

OpenStudy (anonymous):

need help?

OpenStudy (anonymous):

yeah im so lost

OpenStudy (anonymous):

Here is the factored version of #6: (x+2)(x-4)

OpenStudy (anonymous):

F O I L watch what happens when I FOIL it: x^2 -4x +2x -8

OpenStudy (anonymous):

Thanks

OpenStudy (anonymous):

now simplify the middle two terms =x^2 -2x -8 notice how the factors of 8=-4*2 add up to the middle term -2? then look at the factored form and you see the -4 and +2 in the factors

OpenStudy (anonymous):

good?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
RAVEN69: My drawing so far is actually fire
1 week ago 9 Replies 2 Medals
PureSoulless: is staying at your friend's house while you're homeless legal.
2 weeks ago 5 Replies 1 Medal
whyjustwhy: i did that one TV girl trend with blake (aka @ShadowKid3)
1 week ago 12 Replies 2 Medals
whyjustwhy: i did that one TV girl trend with blake (aka @shadowkid3)
2 weeks ago 3 Replies 0 Medals
whyjustwhy: yo guys he can watch me sleep now (ignore dora)
3 weeks ago 24 Replies 1 Medal
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!