(4x(2)-3x-2)-(2x(2)+2x+7)=0

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Solution for (4x(2)-3x-2)-(2x(2)+2x+7)=0 equation:



(4x(2)-3x-2)-(2x(2)+2x+7)=0
We add all the numbers together, and all the variables
(+4x^2-3x-2)-(+2x^2+2x+7)=0
We get rid of parentheses
4x^2-2x^2-3x-2x-2-7=0
We add all the numbers together, and all the variables
2x^2-5x-9=0
a = 2; b = -5; c = -9;
Δ = b2-4ac
Δ = -52-4·2·(-9)
Δ = 97
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{97}}{2*2}=\frac{5-\sqrt{97}}{4} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+\sqrt{97}}{2*2}=\frac{5+\sqrt{97}}{4} $

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