(-x^2)+6=3

Solution for (-x^2)+6=3 equation:

Simplifying
(-1x2) + 6 = 3

Reorder the terms:
6 + (-1x2) = 3

Solving
6 + (-1x2) = 3

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + (-1x2) = 3 + -6

Combine like terms: 6 + -6 = 0
0 + (-1x2) = 3 + -6
(-1x2) = 3 + -6

Combine like terms: 3 + -6 = -3
(-1x2) = -3

Divide each side by '-1'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}