(w+3)(w-3)=0

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

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

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

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

Multiply (3 + w) * (-3 + w)
(3(-3 + w) + w(-3 + w)) = 0
((-3 * 3 + w * 3) + w(-3 + w)) = 0
((-9 + 3w) + w(-3 + w)) = 0
(-9 + 3w + (-3 * w + w * w)) = 0
(-9 + 3w + (-3w + w2)) = 0

Combine like terms: 3w + -3w = 0
(-9 + 0 + w2) = 0
(-9 + w2) = 0

Solving
-9 + w2 = 0

Solving for variable 'w'.

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

Add '9' to each side of the equation.
-9 + 9 + w2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + w2 = 0 + 9
w2 = 0 + 9

Combine like terms: 0 + 9 = 9
w2 = 9

Simplifying
w2 = 9

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