(c-4)(c+4)=

Solution for (c-4)(c+4)= equation:

Simplifying
(c + -4)(c + 4) = 0

Reorder the terms:
(-4 + c)(c + 4) = 0

Reorder the terms:
(-4 + c)(4 + c) = 0

Multiply (-4 + c) * (4 + c)
(-4(4 + c) + c(4 + c)) = 0
((4 * -4 + c * -4) + c(4 + c)) = 0
((-16 + -4c) + c(4 + c)) = 0
(-16 + -4c + (4 * c + c * c)) = 0
(-16 + -4c + (4c + c2)) = 0

Combine like terms: -4c + 4c = 0
(-16 + 0 + c2) = 0
(-16 + c2) = 0

Solving
-16 + c2 = 0

Solving for variable 'c'.

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

Add '16' to each side of the equation.
-16 + 16 + c2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + c2 = 0 + 16
c2 = 0 + 16

Combine like terms: 0 + 16 = 16
c2 = 16

Simplifying
c2 = 16

Take the square root of each side:
c = {-4, 4}