(P+3)2=81

Solution for (P+3)2=81 equation:

Simplifying
(P + 3) * 2 = 81

Reorder the terms:
(3 + P) * 2 = 81

Reorder the terms for easier multiplication:
2(3 + P) = 81
(3 * 2 + P * 2) = 81
(6 + 2P) = 81

Solving
6 + 2P = 81

Solving for variable 'P'.

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

Add '-6' to each side of the equation.
6 + -6 + 2P = 81 + -6

Combine like terms: 6 + -6 = 0
0 + 2P = 81 + -6
2P = 81 + -6

Combine like terms: 81 + -6 = 75
2P = 75

Divide each side by '2'.
P = 37.5

Simplifying
P = 37.5