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Mathematics 8 Online
OpenStudy (anonymous):

Solve the equation using factoring. x2 + 8x - 20 = 0

OpenStudy (anonymous):

What multiplies to -20 and adds to 8?

OpenStudy (anonymous):

-1 & 20 1 & -20 -2 & 10 2 & -10 -4 & 5 4 & -5

OpenStudy (anonymous):

2,10?

OpenStudy (anonymous):

yes...which one is negative? because you need -20

OpenStudy (anonymous):

-2?

OpenStudy (anonymous):

yes....end result is (x+10)(x-2)

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