16+(x-4)*(x+4)=0

Solution for 16+(x-4)*(x+4)=0 equation:

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

Reorder the terms:
16 + (-4 + x)(x + 4) = 0

Reorder the terms:
16 + (-4 + x)(4 + x) = 0

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

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

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

Solving
x2 = 0

Solving for variable 'x'.

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

Simplifying
x2 = 0

Take the square root of each side:
x = {0}