-3x^2+72=-60

Solution for -3x^2+72=-60 equation:

-3x^2+72=-60

We move all terms to the left:

-3x^2+72-(-60)=0

We add all the numbers together, and all the variables

-3x^2+132=0

a = -3; b = 0; c = +132;
Δ = b2-4ac
Δ = 02-4·(-3)·132
Δ = 1584
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:

$\sqrt{\Delta}=\sqrt{1584}=\sqrt{144*11}=\sqrt{144}*\sqrt{11}=12\sqrt{11}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12\sqrt{11}}{2*-3}=\frac{0-12\sqrt{11}}{-6}
=-\frac{12\sqrt{11}}{-6}
=-\frac{2\sqrt{11}}{-1}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12\sqrt{11}}{2*-3}=\frac{0+12\sqrt{11}}{-6}
=\frac{12\sqrt{11}}{-6}
=\frac{2\sqrt{11}}{-1}
$