0.15=2x*x

Solution for 0.15=2x*x equation:

Simplifying
0.15 = 2x * x

Multiply x * x
0.15 = 2x2

Solving
0.15 = 2x2

Solving for variable 'x'.

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

Add '-2x2' to each side of the equation.
0.15 + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
0.15 + -2x2 = 0

Add '-0.15' to each side of the equation.
0.15 + -0.15 + -2x2 = 0 + -0.15

Combine like terms: 0.15 + -0.15 = 0.00
0.00 + -2x2 = 0 + -0.15
-2x2 = 0 + -0.15

Combine like terms: 0 + -0.15 = -0.15
-2x2 = -0.15

Divide each side by '-2'.
x2 = 0.075

Simplifying
x2 = 0.075

Take the square root of each side:
x = {-0.273861279, 0.273861279}