48=12x2

Solution for 48=12x2 equation:

48=12x^2

We move all terms to the left:

48-(12x^2)=0

a = -12; b = 0; c = +48;
Δ = b2-4ac
Δ = 02-4·(-12)·48
Δ = 2304
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2304}=48$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-48}{2*-12}=\frac{-48}{-24}
=+2
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+48}{2*-12}=\frac{48}{-24}
=-2
$