-0.5x^2+2.5=0

Solution for -0.5x^2+2.5=0 equation:

Simplifying
-0.5x2 + 2.5 = 0

Reorder the terms:
2.5 + -0.5x2 = 0

Solving
2.5 + -0.5x2 = 0

Solving for variable 'x'.

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

Add '-2.5' to each side of the equation.
2.5 + -2.5 + -0.5x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -0.5x2 = 0 + -2.5
-0.5x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-0.5x2 = -2.5

Divide each side by '-0.5'.
x2 = 5

Simplifying
x2 = 5

Take the square root of each side:
x = {-2.236067978, 2.236067978}