4x^2+2x-10=9x-9

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Solution for 4x^2+2x-10=9x-9 equation:



4x^2+2x-10=9x-9
We move all terms to the left:
4x^2+2x-10-(9x-9)=0
We get rid of parentheses
4x^2+2x-9x+9-10=0
We add all the numbers together, and all the variables
4x^2-7x-1=0
a = 4; b = -7; c = -1;
Δ = b2-4ac
Δ = -72-4·4·(-1)
Δ = 65
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{-(-7)-\sqrt{65}}{2*4}=\frac{7-\sqrt{65}}{8} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{65}}{2*4}=\frac{7+\sqrt{65}}{8} $

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