X=((x-4)*(x+4))

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


Simplifying
X = ((x + -4)(x + 4))

Reorder the terms:
X = ((-4 + x)(x + 4))

Reorder the terms:
X = ((-4 + x)(4 + x))

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

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

Remove parenthesis around (-16 + x2)
X = -16 + x2

Solving
X = -16 + x2

Solving for variable 'X'.

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

Simplifying
X = -16 + x2

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