56=x^2-3x-2

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Solution for 56=x^2-3x-2 equation:



56=x^2-3x-2
We move all terms to the left:
56-(x^2-3x-2)=0
We get rid of parentheses
-x^2+3x+2+56=0
We add all the numbers together, and all the variables
-1x^2+3x+58=0
a = -1; b = 3; c = +58;
Δ = b2-4ac
Δ = 32-4·(-1)·58
Δ = 241
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{-(3)-\sqrt{241}}{2*-1}=\frac{-3-\sqrt{241}}{-2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{241}}{2*-1}=\frac{-3+\sqrt{241}}{-2} $

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