(x+3)2-16=0

Solution for (x+3)2-16=0 equation:

Simplifying
(x + 3) * 2 + -16 = 0

Reorder the terms:
(3 + x) * 2 + -16 = 0

Reorder the terms for easier multiplication:
2(3 + x) + -16 = 0
(3 * 2 + x * 2) + -16 = 0
(6 + 2x) + -16 = 0

Reorder the terms:
6 + -16 + 2x = 0

Combine like terms: 6 + -16 = -10
-10 + 2x = 0

Solving
-10 + 2x = 0

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 2x = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 2x = 0 + 10
2x = 0 + 10

Combine like terms: 0 + 10 = 10
2x = 10

Divide each side by '2'.
x = 5

Simplifying
x = 5