-2x^2+9=3

Solution for -2x^2+9=3 equation:

Simplifying
-2x2 + 9 = 3

Reorder the terms:
9 + -2x2 = 3

Solving
9 + -2x2 = 3

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -2x2 = 3 + -9

Combine like terms: 9 + -9 = 0
0 + -2x2 = 3 + -9
-2x2 = 3 + -9

Combine like terms: 3 + -9 = -6
-2x2 = -6

Divide each side by '-2'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}