0=x^2+9-780

Solution for 0=x^2+9-780 equation:

Simplifying
0 = x2 + 9 + -780

Reorder the terms:
0 = 9 + -780 + x2

Combine like terms: 9 + -780 = -771
0 = -771 + x2

Solving
0 = -771 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
0 + -1x2 = -771 + x2 + -1x2
Remove the zero:
-1x2 = -771 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-1x2 = -771 + 0
-1x2 = -771

Divide each side by '-1'.
x2 = 771

Simplifying
x2 = 771

Take the square root of each side:
x = {-27.766886754, 27.766886754}