3+5-2x^2=0

Solution for 3+5-2x^2=0 equation:

Simplifying
3 + 5 + -2x2 = 0

Combine like terms: 3 + 5 = 8
8 + -2x2 = 0

Solving
8 + -2x2 = 0

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + -2x2 = 0 + -8

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

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

Divide each side by '-2'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}