7x2=5x+6

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Solution for 7x2=5x+6 equation:



7x^2=5x+6
We move all terms to the left:
7x^2-(5x+6)=0
We get rid of parentheses
7x^2-5x-6=0
a = 7; b = -5; c = -6;
Δ = b2-4ac
Δ = -52-4·7·(-6)
Δ = 193
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-5)-\sqrt{193}}{2*7}=\frac{5-\sqrt{193}}{14} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+\sqrt{193}}{2*7}=\frac{5+\sqrt{193}}{14} $

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