-x^2+1600=0

Solution for -x^2+1600=0 equation:

Simplifying
-1x2 + 1600 = 0

Reorder the terms:
1600 + -1x2 = 0

Solving
1600 + -1x2 = 0

Solving for variable 'x'.

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

Add '-1600' to each side of the equation.
1600 + -1600 + -1x2 = 0 + -1600

Combine like terms: 1600 + -1600 = 0
0 + -1x2 = 0 + -1600
-1x2 = 0 + -1600

Combine like terms: 0 + -1600 = -1600
-1x2 = -1600

Divide each side by '-1'.
x2 = 1600

Simplifying
x2 = 1600

Take the square root of each side:
x = {-40, 40}