1.25x^2-16.25=0

Solution for 1.25x^2-16.25=0 equation:

Simplifying
1.25x2 + -16.25 = 0

Reorder the terms:
-16.25 + 1.25x2 = 0

Solving
-16.25 + 1.25x2 = 0

Solving for variable 'x'.

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

Add '16.25' to each side of the equation.
-16.25 + 16.25 + 1.25x2 = 0 + 16.25

Combine like terms: -16.25 + 16.25 = 0.00
0.00 + 1.25x2 = 0 + 16.25
1.25x2 = 0 + 16.25

Combine like terms: 0 + 16.25 = 16.25
1.25x2 = 16.25

Divide each side by '1.25'.
x2 = 13

Simplifying
x2 = 13

Take the square root of each side:
x = {-3.605551275, 3.605551275}