-x^2+12+45=0

Solution for -x^2+12+45=0 equation:

Simplifying
-1x2 + 12 + 45 = 0

Reorder the terms:
12 + 45 + -1x2 = 0

Combine like terms: 12 + 45 = 57
57 + -1x2 = 0

Solving
57 + -1x2 = 0

Solving for variable 'x'.

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

Add '-57' to each side of the equation.
57 + -57 + -1x2 = 0 + -57

Combine like terms: 57 + -57 = 0
0 + -1x2 = 0 + -57
-1x2 = 0 + -57

Combine like terms: 0 + -57 = -57
-1x2 = -57

Divide each side by '-1'.
x2 = 57

Simplifying
x2 = 57

Take the square root of each side:
x = {-7.549834435, 7.549834435}