-1-2(36-x^2)=0

Solution for -1-2(36-x^2)=0 equation:

Simplifying
-1 + -2(36 + -1x2) = 0
-1 + (36 * -2 + -1x2 * -2) = 0
-1 + (-72 + 2x2) = 0

Combine like terms: -1 + -72 = -73
-73 + 2x2 = 0

Solving
-73 + 2x2 = 0

Solving for variable 'x'.

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

Add '73' to each side of the equation.
-73 + 73 + 2x2 = 0 + 73

Combine like terms: -73 + 73 = 0
0 + 2x2 = 0 + 73
2x2 = 0 + 73

Combine like terms: 0 + 73 = 73
2x2 = 73

Divide each side by '2'.
x2 = 36.5

Simplifying
x2 = 36.5

Take the square root of each side:
x = {-6.041522987, 6.041522987}