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Mathematics 25 Online
OpenStudy (anonymous):

need more help on a question plz?

OpenStudy (anonymous):

\[x ^{2} +8 +12\]

OpenStudy (anonymous):

x^2 + 20

OpenStudy (anonymous):

but i think you mean x^2 + 8x + 12

OpenStudy (anonymous):

so, what adds up to 8 but multiplies to 12?

OpenStudy (anonymous):

to do this, list factors of 12

OpenStudy (anonymous):

yes thts what i mean?? sorry

OpenStudy (anonymous):

Factors: 1, 2, 3, 4, 6, 12 Which two of these factors add up to 8?

OpenStudy (anonymous):

4 and 2 ?

OpenStudy (anonymous):

4 + 2 = 6 last time i check 6 doesn't equal 8

OpenStudy (anonymous):

*checked

OpenStudy (anonymous):

ohh ok 6 and 2

OpenStudy (anonymous):

ok, so (x + 6)(x + 2)

OpenStudy (anonymous):

and thats how we factor it

OpenStudy (anonymous):

because, you would split up the 8x like this: x^2 + 2x + 6x +12 x(x+2) + 6(x+2) (x+2)(x+6)

OpenStudy (anonymous):

oh ok that makes sense now

OpenStudy (anonymous):

u ready for a few more

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