f(x)=x^2 -3x-8 solve using the quadratic formula

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30-11-2017
Mathematics

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f(x)=x^2 -3x-8 solve using the quadratic formula

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zrh2sfo zrh2sfo · Answer 1 · 2017-12-02T01:09:33+01:00

zrh2sfo zrh2sfo

02-12-2017

Solve for x over the real numbers:
x^2 - 3 x - 8 = 0
x = (3 ± sqrt((-3)^2 - 4 (-8)))/2 = (3 ± sqrt(9 + 32))/2 = (3 ± sqrt(41))/2:
Answer: x = (3 + sqrt(41))/2 or x = (3 - sqrt(41))/2 = using quadratic formula

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