=x^2*.90

Solution for =x^2*.90 equation:

Simplifying
0 = x2 * 0.90

Reorder the terms for easier multiplication:
0 = 0.90x2

Solving
0 = 0.90x2

Solving for variable 'x'.

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

Add '-0.90x2' to each side of the equation.
0 + -0.90x2 = 0.90x2 + -0.90x2
Remove the zero:
-0.90x2 = 0.90x2 + -0.90x2

Combine like terms: 0.90x2 + -0.90x2 = 0.00
-0.90x2 = 0.00

Divide each side by '-0.90'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}