03-04-2016
Mathematics

contestada

x(x^2-6x+5)=12(x-5)
Please! Step by step.

Respuesta :

annika64 annika64

03-04-2016

X(x^2-6x+5)=12(x-5)
Distribute
x^3-6x^2+5x=12x-60
Simplify (minus 12x from both sides)
x^3-6x^2-7x=60
Factor X
x(x^2-6x-7)=60
Divide X from btoh sides
(x^2-6x-7)=60/x
Simplify
X=7.861308

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