72=9t^2-12-12

Solution for 72=9t^2-12-12 equation:

Simplifying
72 = 9t2 + -12 + -12

Reorder the terms:
72 = -12 + -12 + 9t2

Combine like terms: -12 + -12 = -24
72 = -24 + 9t2

Solving
72 = -24 + 9t2

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-9t2' to each side of the equation.
72 + -9t2 = -24 + 9t2 + -9t2

Combine like terms: 9t2 + -9t2 = 0
72 + -9t2 = -24 + 0
72 + -9t2 = -24

Add '-72' to each side of the equation.
72 + -72 + -9t2 = -24 + -72

Combine like terms: 72 + -72 = 0
0 + -9t2 = -24 + -72
-9t2 = -24 + -72

Combine like terms: -24 + -72 = -96
-9t2 = -96

Divide each side by '-9'.
t2 = 10.66666667

Simplifying
t2 = 10.66666667

Take the square root of each side:
t = {-3.265986324, 3.265986324}