(3+a)2=

Solution for (3+a)2= equation:

Simplifying
(3 + a) * 2 = 0

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

Solving
6 + 2a = 0

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 2a = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 0 + -6
2a = 0 + -6

Combine like terms: 0 + -6 = -6
2a = -6

Divide each side by '2'.
a = -3

Simplifying
a = -3