3x+10=x^2-6x

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Solution for 3x+10=x^2-6x equation:



3x+10=x^2-6x
We move all terms to the left:
3x+10-(x^2-6x)=0
We get rid of parentheses
-x^2+3x+6x+10=0
We add all the numbers together, and all the variables
-1x^2+9x+10=0
a = -1; b = 9; c = +10;
Δ = b2-4ac
Δ = 92-4·(-1)·10
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{121}=11$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-11}{2*-1}=\frac{-20}{-2} =+10 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+11}{2*-1}=\frac{2}{-2} =-1 $

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