Ask your own question, for FREE!
Mathematics 16 Online
undeadknight26 (undeadknight26):

Help factoring?

undeadknight26 (undeadknight26):

x^2 + 8x – 20

OpenStudy (anonymous):

(x+10)(x-2)

OpenStudy (anonymous):

what adds up to 8 but multiplies to -20?

undeadknight26 (undeadknight26):

4?

OpenStudy (anonymous):

list factors of -20

undeadknight26 (undeadknight26):

Can u help me with like 2 more?

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

(-10 + -1x)(2 + -1x)

OpenStudy (anonymous):

(-10 - 1x)(2 - 1x), same thing.

undeadknight26 (undeadknight26):

x2 – 9x – 20

OpenStudy (anonymous):

x^2 - 9x - 20

OpenStudy (anonymous):

we can't factor that so we'd use the quadratic formula

OpenStudy (anonymous):

a = 1 b= -9 c= -20

OpenStudy (anonymous):

just substitute and solve

undeadknight26 (undeadknight26):

So this would be considered a prime?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Yes.

OpenStudy (anonymous):

There is no answer..

OpenStudy (anonymous):

@greenlegodude57 there is an answer, you just can't obtain it through factoring

undeadknight26 (undeadknight26):

thats it thanks guys :)

OpenStudy (anonymous):

np

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!
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!