x2+4x=59

Solution for x2+4x=59 equation:

x2+4x=59

We move all terms to the left:

x2+4x-(59)=0

We add all the numbers together, and all the variables

x^2+4x-59=0

a = 1; b = 4; c = -59;
Δ = b2-4ac
Δ = 42-4·1·(-59)
Δ = 252
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{252}=\sqrt{36*7}=\sqrt{36}*\sqrt{7}=6\sqrt{7}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-6\sqrt{7}}{2*1}=\frac{-4-6\sqrt{7}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+6\sqrt{7}}{2*1}=\frac{-4+6\sqrt{7}}{2}
$