0.3-0.2x^2=-2

Solution for 0.3-0.2x^2=-2 equation:

Simplifying
0.3 + -0.2x2 = -2

Solving
0.3 + -0.2x2 = -2

Solving for variable 'x'.

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

Add '-0.3' to each side of the equation.
0.3 + -0.3 + -0.2x2 = -2 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + -0.2x2 = -2 + -0.3
-0.2x2 = -2 + -0.3

Combine like terms: -2 + -0.3 = -2.3
-0.2x2 = -2.3

Divide each side by '-0.2'.
x2 = 11.5

Simplifying
x2 = 11.5

Take the square root of each side:
x = {-3.391164992, 3.391164992}