0
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
What else can I help you with?
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