(4-x)(4+x)=

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

Simplifying
(4 + -1x)(4 + x) = 0

Multiply (4 + -1x) * (4 + x)
(4(4 + x) + -1x * (4 + x)) = 0
((4 * 4 + x * 4) + -1x * (4 + x)) = 0
((16 + 4x) + -1x * (4 + x)) = 0
(16 + 4x + (4 * -1x + x * -1x)) = 0
(16 + 4x + (-4x + -1x2)) = 0

Combine like terms: 4x + -4x = 0
(16 + 0 + -1x2) = 0
(16 + -1x2) = 0

Solving
16 + -1x2 = 0

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -1x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -1x2 = 0 + -16
-1x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-1x2 = -16

Divide each side by '-1'.
x2 = 16

Simplifying
x2 = 16

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