(c+10)(c-10)=

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

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

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

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

Multiply (10 + c) * (-10 + c)
(10(-10 + c) + c(-10 + c)) = 0
((-10 * 10 + c * 10) + c(-10 + c)) = 0
((-100 + 10c) + c(-10 + c)) = 0
(-100 + 10c + (-10 * c + c * c)) = 0
(-100 + 10c + (-10c + c2)) = 0

Combine like terms: 10c + -10c = 0
(-100 + 0 + c2) = 0
(-100 + c2) = 0

Solving
-100 + c2 = 0

Solving for variable 'c'.

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

Add '100' to each side of the equation.
-100 + 100 + c2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + c2 = 0 + 100
c2 = 0 + 100

Combine like terms: 0 + 100 = 100
c2 = 100

Simplifying
c2 = 100

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