(x-1)(x+3)=x^

Solution for (x-1)(x+3)=x^ equation:

(x-1)(x+3)=x^

We move all terms to the left:

(x-1)(x+3)-(x^)=0

We add all the numbers together, and all the variables

-1x+(x-1)(x+3)=0

We multiply parentheses ..

(+x^2+3x-1x-3)-1x=0

We get rid of parentheses

x^2+3x-1x-1x-3=0

We add all the numbers together, and all the variables

x^2+x-3=0

a = 1; b = 1; c = -3;
Δ = b2-4ac
Δ = 12-4·1·(-3)
Δ = 13
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{13}}{2*1}=\frac{-1-\sqrt{13}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{13}}{2*1}=\frac{-1+\sqrt{13}}{2}
$