I=(x-1)*(x+2)*(x+3)*(x+6)

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Solution for I=(x-1)*(x+2)*(x+3)*(x+6) equation: 


Simplifying
I = (x + -1)(x + 2)(x + 3)(x + 6)

Reorder the terms:
I = (-1 + x)(x + 2)(x + 3)(x + 6)

Reorder the terms:
I = (-1 + x)(2 + x)(x + 3)(x + 6)

Reorder the terms:
I = (-1 + x)(2 + x)(3 + x)(x + 6)

Reorder the terms:
I = (-1 + x)(2 + x)(3 + x)(6 + x)

Multiply (-1 + x) * (2 + x)
I = (-1(2 + x) + x(2 + x))(3 + x)(6 + x)
I = ((2 * -1 + x * -1) + x(2 + x))(3 + x)(6 + x)
I = ((-2 + -1x) + x(2 + x))(3 + x)(6 + x)
I = (-2 + -1x + (2 * x + x * x))(3 + x)(6 + x)
I = (-2 + -1x + (2x + x2))(3 + x)(6 + x)

Combine like terms: -1x + 2x = 1x
I = (-2 + 1x + x2)(3 + x)(6 + x)

Multiply (-2 + 1x + x2) * (3 + x)
I = (-2(3 + x) + 1x * (3 + x) + x2(3 + x))(6 + x)
I = ((3 * -2 + x * -2) + 1x * (3 + x) + x2(3 + x))(6 + x)
I = ((-6 + -2x) + 1x * (3 + x) + x2(3 + x))(6 + x)
I = (-6 + -2x + (3 * 1x + x * 1x) + x2(3 + x))(6 + x)
I = (-6 + -2x + (3x + 1x2) + x2(3 + x))(6 + x)
I = (-6 + -2x + 3x + 1x2 + (3 * x2 + x * x2))(6 + x)
I = (-6 + -2x + 3x + 1x2 + (3x2 + x3))(6 + x)

Combine like terms: -2x + 3x = 1x
I = (-6 + 1x + 1x2 + 3x2 + x3)(6 + x)

Combine like terms: 1x2 + 3x2 = 4x2
I = (-6 + 1x + 4x2 + x3)(6 + x)

Multiply (-6 + 1x + 4x2 + x3) * (6 + x)
I = (-6(6 + x) + 1x * (6 + x) + 4x2 * (6 + x) + x3(6 + x))
I = ((6 * -6 + x * -6) + 1x * (6 + x) + 4x2 * (6 + x) + x3(6 + x))
I = ((-36 + -6x) + 1x * (6 + x) + 4x2 * (6 + x) + x3(6 + x))
I = (-36 + -6x + (6 * 1x + x * 1x) + 4x2 * (6 + x) + x3(6 + x))
I = (-36 + -6x + (6x + 1x2) + 4x2 * (6 + x) + x3(6 + x))
I = (-36 + -6x + 6x + 1x2 + (6 * 4x2 + x * 4x2) + x3(6 + x))
I = (-36 + -6x + 6x + 1x2 + (24x2 + 4x3) + x3(6 + x))
I = (-36 + -6x + 6x + 1x2 + 24x2 + 4x3 + (6 * x3 + x * x3))
I = (-36 + -6x + 6x + 1x2 + 24x2 + 4x3 + (6x3 + x4))

Combine like terms: -6x + 6x = 0
I = (-36 + 0 + 1x2 + 24x2 + 4x3 + 6x3 + x4)
I = (-36 + 1x2 + 24x2 + 4x3 + 6x3 + x4)

Combine like terms: 1x2 + 24x2 = 25x2
I = (-36 + 25x2 + 4x3 + 6x3 + x4)

Combine like terms: 4x3 + 6x3 = 10x3
I = (-36 + 25x2 + 10x3 + x4)

Solving
I = -36 + 25x2 + 10x3 + x4

Solving for variable 'I'.

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

Simplifying
I = -36 + 25x2 + 10x3 + x4

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