y=(x-3)(x+1)(2x^2+8x)

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Solution for y=(x-3)(x+1)(2x^2+8x) equation: 


Simplifying
y = (x + -3)(x + 1)(2x2 + 8x)

Reorder the terms:
y = (-3 + x)(x + 1)(2x2 + 8x)

Reorder the terms:
y = (-3 + x)(1 + x)(2x2 + 8x)

Reorder the terms:
y = (-3 + x)(1 + x)(8x + 2x2)

Multiply (-3 + x) * (1 + x)
y = (-3(1 + x) + x(1 + x))(8x + 2x2)
y = ((1 * -3 + x * -3) + x(1 + x))(8x + 2x2)
y = ((-3 + -3x) + x(1 + x))(8x + 2x2)
y = (-3 + -3x + (1 * x + x * x))(8x + 2x2)
y = (-3 + -3x + (1x + x2))(8x + 2x2)

Combine like terms: -3x + 1x = -2x
y = (-3 + -2x + x2)(8x + 2x2)

Multiply (-3 + -2x + x2) * (8x + 2x2)
y = (-3(8x + 2x2) + -2x * (8x + 2x2) + x2(8x + 2x2))
y = ((8x * -3 + 2x2 * -3) + -2x * (8x + 2x2) + x2(8x + 2x2))
y = ((-24x + -6x2) + -2x * (8x + 2x2) + x2(8x + 2x2))
y = (-24x + -6x2 + (8x * -2x + 2x2 * -2x) + x2(8x + 2x2))
y = (-24x + -6x2 + (-16x2 + -4x3) + x2(8x + 2x2))
y = (-24x + -6x2 + -16x2 + -4x3 + (8x * x2 + 2x2 * x2))
y = (-24x + -6x2 + -16x2 + -4x3 + (8x3 + 2x4))

Combine like terms: -6x2 + -16x2 = -22x2
y = (-24x + -22x2 + -4x3 + 8x3 + 2x4)

Combine like terms: -4x3 + 8x3 = 4x3
y = (-24x + -22x2 + 4x3 + 2x4)

Solving
y = -24x + -22x2 + 4x3 + 2x4

Solving for variable 'y'.

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

Simplifying
y = -24x + -22x2 + 4x3 + 2x4

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