-6x(x-13)=-108

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Solution for -6x(x-13)=-108 equation:



-6x(x-13)=-108
We move all terms to the left:
-6x(x-13)-(-108)=0
We add all the numbers together, and all the variables
-6x(x-13)+108=0
We multiply parentheses
-6x^2+78x+108=0
a = -6; b = 78; c = +108;
Δ = b2-4ac
Δ = 782-4·(-6)·108
Δ = 8676
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{8676}=\sqrt{36*241}=\sqrt{36}*\sqrt{241}=6\sqrt{241}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(78)-6\sqrt{241}}{2*-6}=\frac{-78-6\sqrt{241}}{-12} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(78)+6\sqrt{241}}{2*-6}=\frac{-78+6\sqrt{241}}{-12} $

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