x2+1=x+23

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Solution for x2+1=x+23 equation:



x2+1=x+23
We move all terms to the left:
x2+1-(x+23)=0
We add all the numbers together, and all the variables
x^2-(x+23)+1=0
We get rid of parentheses
x^2-x-23+1=0
We add all the numbers together, and all the variables
x^2-1x-22=0
a = 1; b = -1; c = -22;
Δ = b2-4ac
Δ = -12-4·1·(-22)
Δ = 89
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{-(-1)-\sqrt{89}}{2*1}=\frac{1-\sqrt{89}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{89}}{2*1}=\frac{1+\sqrt{89}}{2} $

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