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

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


Simplifying
y = ((x * x) + 4)((x * x) + -4)

Multiply x * x
y = ((x2) + 4)((x * x) + -4)
y = (x2 + 4)((x * x) + -4)

Reorder the terms:
y = (4 + x2)((x * x) + -4)

Multiply x * x
y = (4 + x2)((x2) + -4)
y = (4 + x2)(x2 + -4)

Reorder the terms:
y = (4 + x2)(-4 + x2)

Multiply (4 + x2) * (-4 + x2)
y = (4(-4 + x2) + x2(-4 + x2))
y = ((-4 * 4 + x2 * 4) + x2(-4 + x2))
y = ((-16 + 4x2) + x2(-4 + x2))
y = (-16 + 4x2 + (-4 * x2 + x2 * x2))
y = (-16 + 4x2 + (-4x2 + x4))

Combine like terms: 4x2 + -4x2 = 0
y = (-16 + 0 + x4)
y = (-16 + x4)

Solving
y = -16 + x4

Solving for variable 'y'.

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

Simplifying
y = -16 + x4

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