x2-14x-18=-8x+2

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Solution for x2-14x-18=-8x+2 equation:



x2-14x-18=-8x+2
We move all terms to the left:
x2-14x-18-(-8x+2)=0
We add all the numbers together, and all the variables
x^2-14x-(-8x+2)-18=0
We get rid of parentheses
x^2-14x+8x-2-18=0
We add all the numbers together, and all the variables
x^2-6x-20=0
a = 1; b = -6; c = -20;
Δ = b2-4ac
Δ = -62-4·1·(-20)
Δ = 116
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:
$\sqrt{\Delta}=\sqrt{116}=\sqrt{4*29}=\sqrt{4}*\sqrt{29}=2\sqrt{29}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-2\sqrt{29}}{2*1}=\frac{6-2\sqrt{29}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+2\sqrt{29}}{2*1}=\frac{6+2\sqrt{29}}{2} $

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