x^2-5x=-3,36

Solution for x^2-5x=-3,36 equation:

x^2-5x=-3.36

We move all terms to the left:

x^2-5x-(-3.36)=0

We add all the numbers together, and all the variables

x^2-5x+3.36=0

a = 1; b = -5; c = +3.36;
Δ = b2-4ac
Δ = -52-4·1·3.36
Δ = 11.56
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{-(-5)-\sqrt{11.56}}{2*1}=\frac{5-\sqrt{11.56}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+\sqrt{11.56}}{2*1}=\frac{5+\sqrt{11.56}}{2}
$