-2x^2+28-8=0

Solution for -2x^2+28-8=0 equation:

Simplifying
-2x2 + 28 + -8 = 0

Reorder the terms:
28 + -8 + -2x2 = 0

Combine like terms: 28 + -8 = 20
20 + -2x2 = 0

Solving
20 + -2x2 = 0

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + -2x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -2x2 = 0 + -20
-2x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-2x2 = -20

Divide each side by '-2'.
x2 = 10

Simplifying
x2 = 10

Take the square root of each side:
x = {-3.16227766, 3.16227766}