7x2-10,x=6

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Solution for 7x2-10,x=6 equation:



7x^2-10.x=6
We move all terms to the left:
7x^2-10.x-(6)=0
We add all the numbers together, and all the variables
7x^2-10x-6=0
a = 7; b = -10; c = -6;
Δ = b2-4ac
Δ = -102-4·7·(-6)
Δ = 268
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:
$\sqrt{\Delta}=\sqrt{268}=\sqrt{4*67}=\sqrt{4}*\sqrt{67}=2\sqrt{67}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{67}}{2*7}=\frac{10-2\sqrt{67}}{14} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{67}}{2*7}=\frac{10+2\sqrt{67}}{14} $

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