180=(x)(x-4)(x+9)

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Solution for 180=(x)(x-4)(x+9) equation: 


Simplifying
180 = (x)(x + -4)(x + 9)

Reorder the terms:
180 = x(-4 + x)(x + 9)

Reorder the terms:
180 = x(-4 + x)(9 + x)

Multiply (-4 + x) * (9 + x)
180 = x(-4(9 + x) + x(9 + x))
180 = x((9 * -4 + x * -4) + x(9 + x))
180 = x((-36 + -4x) + x(9 + x))
180 = x(-36 + -4x + (9 * x + x * x))
180 = x(-36 + -4x + (9x + x2))

Combine like terms: -4x + 9x = 5x
180 = x(-36 + 5x + x2)
180 = (-36 * x + 5x * x + x2 * x)
180 = (-36x + 5x2 + x3)

Solving
180 = -36x + 5x2 + x3

Solving for variable 'x'.

Reorder the terms:
180 + 36x + -5x2 + -1x3 = -36x + 36x + 5x2 + -5x2 + x3 + -1x3

Combine like terms: -36x + 36x = 0
180 + 36x + -5x2 + -1x3 = 0 + 5x2 + -5x2 + x3 + -1x3
180 + 36x + -5x2 + -1x3 = 5x2 + -5x2 + x3 + -1x3

Combine like terms: 5x2 + -5x2 = 0
180 + 36x + -5x2 + -1x3 = 0 + x3 + -1x3
180 + 36x + -5x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
180 + 36x + -5x2 + -1x3 = 0

The solution to this equation could not be determined.

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