90=x*25x

Solution for 90=x*25x equation:

Simplifying
90 = x * 25x

Reorder the terms for easier multiplication:
90 = 25x * x

Multiply x * x
90 = 25x2

Solving
90 = 25x2

Solving for variable 'x'.

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

Add '-25x2' to each side of the equation.
90 + -25x2 = 25x2 + -25x2

Combine like terms: 25x2 + -25x2 = 0
90 + -25x2 = 0

Add '-90' to each side of the equation.
90 + -90 + -25x2 = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -25x2 = 0 + -90
-25x2 = 0 + -90

Combine like terms: 0 + -90 = -90
-25x2 = -90

Divide each side by '-25'.
x2 = 3.6

Simplifying
x2 = 3.6

Take the square root of each side:
x = {-1.897366596, 1.897366596}