(w+10)(w-10)=

Solution for (w+10)(w-10)= equation:

Simplifying
(w + 10)(w + -10) = 0

Reorder the terms:
(10 + w)(w + -10) = 0

Reorder the terms:
(10 + w)(-10 + w) = 0

Multiply (10 + w) * (-10 + w)
(10(-10 + w) + w(-10 + w)) = 0
((-10 * 10 + w * 10) + w(-10 + w)) = 0
((-100 + 10w) + w(-10 + w)) = 0
(-100 + 10w + (-10 * w + w * w)) = 0
(-100 + 10w + (-10w + w2)) = 0

Combine like terms: 10w + -10w = 0
(-100 + 0 + w2) = 0
(-100 + w2) = 0

Solving
-100 + w2 = 0

Solving for variable 'w'.

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

Add '100' to each side of the equation.
-100 + 100 + w2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + w2 = 0 + 100
w2 = 0 + 100

Combine like terms: 0 + 100 = 100
w2 = 100

Simplifying
w2 = 100

Take the square root of each side:
w = {-10, 10}