Solve for x in the equation

x^2 -7x-8=0

A. (-1,-8)

B. (1,-8)

C. (-1,8)

D. (1,8)

I think the answer is C.

Solve for x in the equation

x^2 -7x-8=0

A. (-1,-8)

B. (1,-8)

C. (-1,8)

D. (1,8)

I think the answer is C.

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Chicago, IL

x^{2} - 7x - 8 =0

To solve for this you want two factors of 8 that when added together is -7 and when multiplied is -8.

Given the multiple choice we know the correct factors are 1 and 8. We also know that one of the terms must be negative, that way you'll have to numbers that multiply to -8.

So it's either -1 and 8 or 1 and -8. Since 1 + -8 = -7, We know that the correct choice is 1, -8 or B.

To solve for this you want two factors of 8 that when added together is -7 and when multiplied is -8.

Given the multiple choice we know the correct factors are 1 and 8. We also know that one of the terms must be negative, that way you'll have to numbers that multiply to -8.

So it's either -1 and 8 or 1 and -8. Since 1 + -8 = -7, We know that the correct choice is 1, -8 or B.

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