y=(x+1)(x^3+3)

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Solution for y=(x+1)(x^3+3) equation: 


Simplifying
y = (x + 1)(x3 + 3)

Reorder the terms:
y = (1 + x)(x3 + 3)

Reorder the terms:
y = (1 + x)(3 + x3)

Multiply (1 + x) * (3 + x3)
y = (1(3 + x3) + x(3 + x3))
y = ((3 * 1 + x3 * 1) + x(3 + x3))
y = ((3 + 1x3) + x(3 + x3))
y = (3 + 1x3 + (3 * x + x3 * x))
y = (3 + 1x3 + (3x + x4))

Reorder the terms:
y = (3 + 3x + 1x3 + x4)
y = (3 + 3x + 1x3 + x4)

Solving
y = 3 + 3x + 1x3 + x4

Solving for variable 'y'.

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

Simplifying
y = 3 + 3x + 1x3 + x4

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