-12x^2+28-16=0

Solution for -12x^2+28-16=0 equation:

Simplifying
-12x2 + 28 + -16 = 0

Reorder the terms:
28 + -16 + -12x2 = 0

Combine like terms: 28 + -16 = 12
12 + -12x2 = 0

Solving
12 + -12x2 = 0

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -12x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -12x2 = 0 + -12
-12x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-12x2 = -12

Divide each side by '-12'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}