x2+46=-13x+4

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Solution for x2+46=-13x+4 equation:



x2+46=-13x+4
We move all terms to the left:
x2+46-(-13x+4)=0
We add all the numbers together, and all the variables
x^2-(-13x+4)+46=0
We get rid of parentheses
x^2+13x-4+46=0
We add all the numbers together, and all the variables
x^2+13x+42=0
a = 1; b = 13; c = +42;
Δ = b2-4ac
Δ = 132-4·1·42
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1}=1$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(13)-1}{2*1}=\frac{-14}{2} =-7 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(13)+1}{2*1}=\frac{-12}{2} =-6 $

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