(x+3)2=-3+k

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

Simplifying
(x + 3) * 2 = -3 + k

Reorder the terms:
(3 + x) * 2 = -3 + k

Reorder the terms for easier multiplication:
2(3 + x) = -3 + k
(3 * 2 + x * 2) = -3 + k
(6 + 2x) = -3 + k

Solving
6 + 2x = -3 + k

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 + 2x = -3 + -6 + k

Combine like terms: 6 + -6 = 0
0 + 2x = -3 + -6 + k
2x = -3 + -6 + k

Combine like terms: -3 + -6 = -9
2x = -9 + k

Divide each side by '2'.
x = -4.5 + 0.5k

Simplifying
x = -4.5 + 0.5k