(4+z)(4-z)=

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

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

Multiply (4 + z) * (4 + -1z)
(4(4 + -1z) + z(4 + -1z)) = 0
((4 * 4 + -1z * 4) + z(4 + -1z)) = 0
((16 + -4z) + z(4 + -1z)) = 0
(16 + -4z + (4 * z + -1z * z)) = 0
(16 + -4z + (4z + -1z2)) = 0

Combine like terms: -4z + 4z = 0
(16 + 0 + -1z2) = 0
(16 + -1z2) = 0

Solving
16 + -1z2 = 0

Solving for variable 'z'.

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

Add '-16' to each side of the equation.
16 + -16 + -1z2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -1z2 = 0 + -16
-1z2 = 0 + -16

Combine like terms: 0 + -16 = -16
-1z2 = -16

Divide each side by '-1'.
z2 = 16

Simplifying
z2 = 16

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