-2x^2-20+48=0

Solution for -2x^2-20+48=0 equation:

Simplifying
-2x2 + -20 + 48 = 0

Reorder the terms:
-20 + 48 + -2x2 = 0

Combine like terms: -20 + 48 = 28
28 + -2x2 = 0

Solving
28 + -2x2 = 0

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + -2x2 = 0 + -28

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

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

Divide each side by '-2'.
x2 = 14

Simplifying
x2 = 14

Take the square root of each side:
x = {-3.741657387, 3.741657387}