-x^2+51=0

Solution for -x^2+51=0 equation:

Simplifying
-1x2 + 51 = 0

Reorder the terms:
51 + -1x2 = 0

Solving
51 + -1x2 = 0

Solving for variable 'x'.

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

Add '-51' to each side of the equation.
51 + -51 + -1x2 = 0 + -51

Combine like terms: 51 + -51 = 0
0 + -1x2 = 0 + -51
-1x2 = 0 + -51

Combine like terms: 0 + -51 = -51
-1x2 = -51

Divide each side by '-1'.
x2 = 51

Simplifying
x2 = 51

Take the square root of each side:
x = {-7.141428429, 7.141428429}