.1x^2-1.2=8.8

Solution for .1x^2-1.2=8.8 equation:

Simplifying
0.1x2 + -1.2 = 8.8

Reorder the terms:
-1.2 + 0.1x2 = 8.8

Solving
-1.2 + 0.1x2 = 8.8

Solving for variable 'x'.

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

Add '1.2' to each side of the equation.
-1.2 + 1.2 + 0.1x2 = 8.8 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 0.1x2 = 8.8 + 1.2
0.1x2 = 8.8 + 1.2

Combine like terms: 8.8 + 1.2 = 10
0.1x2 = 10

Divide each side by '0.1'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}