What is the answer to x2 plus 13x-40?

Anonymous

∙ 13y ago

Updated: 8/20/2019

X2 + 13X - 40 = 0

I can't factor this, so the quadratic equation will be used.

X = - b (+/-) sqrt(b2 - 4ac)/2a

a = 1

b = 13

c = - 40

X = - 13 (+/-) sqrt[(132 - 4(1)(- 40)]/2(1)

X = - 13 (+/-) sqrt(169 + 160)/2

X = [- 13 (+/-) sqrt(329)]/2

=========================ugly exact answer

Inexact answers.

X = ~ 2.569

X = ~ - 15.569

Wiki User

∙ 13y ago

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