(X+3)2-7=0

Solution for (X+3)2-7=0 equation:

Simplifying
(X + 3) * 2 + -7 = 0

Reorder the terms:
(3 + X) * 2 + -7 = 0

Reorder the terms for easier multiplication:
2(3 + X) + -7 = 0
(3 * 2 + X * 2) + -7 = 0
(6 + 2X) + -7 = 0

Reorder the terms:
6 + -7 + 2X = 0

Combine like terms: 6 + -7 = -1
-1 + 2X = 0

Solving
-1 + 2X = 0

Solving for variable 'X'.

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

Add '1' to each side of the equation.
-1 + 1 + 2X = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2X = 0 + 1
2X = 0 + 1

Combine like terms: 0 + 1 = 1
2X = 1

Divide each side by '2'.
X = 0.5

Simplifying
X = 0.5