(p+3)(p-3)=0

Solution for (p+3)(p-3)=0 equation:

Simplifying
(p + 3)(p + -3) = 0

Reorder the terms:
(3 + p)(p + -3) = 0

Reorder the terms:
(3 + p)(-3 + p) = 0

Multiply (3 + p) * (-3 + p)
(3(-3 + p) + p(-3 + p)) = 0
((-3 * 3 + p * 3) + p(-3 + p)) = 0
((-9 + 3p) + p(-3 + p)) = 0
(-9 + 3p + (-3 * p + p * p)) = 0
(-9 + 3p + (-3p + p2)) = 0

Combine like terms: 3p + -3p = 0
(-9 + 0 + p2) = 0
(-9 + p2) = 0

Solving
-9 + p2 = 0

Solving for variable 'p'.

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

Add '9' to each side of the equation.
-9 + 9 + p2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + p2 = 0 + 9
p2 = 0 + 9

Combine like terms: 0 + 9 = 9
p2 = 9

Simplifying
p2 = 9

Take the square root of each side:
p = {-3, 3}