100=(0.1)x^2

Solution for 100=(0.1)x^2 equation:

Simplifying
100 = (0.1) * x2

Solving
100 = 0.1x2

Solving for variable 'x'.

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

Add '-0.1x2' to each side of the equation.
100 + -0.1x2 = 0.1x2 + -0.1x2

Combine like terms: 0.1x2 + -0.1x2 = 0.0
100 + -0.1x2 = 0.0

Add '-100' to each side of the equation.
100 + -100 + -0.1x2 = 0.0 + -100

Combine like terms: 100 + -100 = 0
0 + -0.1x2 = 0.0 + -100
-0.1x2 = 0.0 + -100

Combine like terms: 0.0 + -100 = -100
-0.1x2 = -100

Divide each side by '-0.1'.
x2 = 1000

Simplifying
x2 = 1000

Take the square root of each side:
x = {-31.622776602, 31.622776602}