X2=4x+48

Solution for X2=4x+48 equation:

X2=4X+48

We move all terms to the left:

X2-(4X+48)=0

We add all the numbers together, and all the variables

X^2-(4X+48)=0

We get rid of parentheses

X^2-4X-48=0

a = 1; b = -4; c = -48;
Δ = b2-4ac
Δ = -42-4·1·(-48)
Δ = 208
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:

$\sqrt{\Delta}=\sqrt{208}=\sqrt{16*13}=\sqrt{16}*\sqrt{13}=4\sqrt{13}$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-4\sqrt{13}}{2*1}=\frac{4-4\sqrt{13}}{2}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+4\sqrt{13}}{2*1}=\frac{4+4\sqrt{13}}{2}
$