(x*x)-12x+35=8

Solution for (x*x)-12x+35=8 equation:

(x*x)-12x+35=8

We move all terms to the left:

(x*x)-12x+35-(8)=0

We add all the numbers together, and all the variables

(+x*x)-12x+35-8=0

We add all the numbers together, and all the variables

-12x+(+x*x)+27=0

We get rid of parentheses

-12x+x*x+27=0

Wy multiply elements

x^2-12x+27=0

a = 1; b = -12; c = +27;
Δ = b2-4ac
Δ = -122-4·1·27
Δ = 36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{36}=6$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-12)-6}{2*1}=\frac{6}{2}
=3
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-12)+6}{2*1}=\frac{18}{2}
=9
$