40=x(x-2)(x+1)

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Solution for 40=x(x-2)(x+1) equation: 


Simplifying
40 = x(x + -2)(x + 1)

Reorder the terms:
40 = x(-2 + x)(x + 1)

Reorder the terms:
40 = x(-2 + x)(1 + x)

Multiply (-2 + x) * (1 + x)
40 = x(-2(1 + x) + x(1 + x))
40 = x((1 * -2 + x * -2) + x(1 + x))
40 = x((-2 + -2x) + x(1 + x))
40 = x(-2 + -2x + (1 * x + x * x))
40 = x(-2 + -2x + (1x + x2))

Combine like terms: -2x + 1x = -1x
40 = x(-2 + -1x + x2)
40 = (-2 * x + -1x * x + x2 * x)
40 = (-2x + -1x2 + x3)

Solving
40 = -2x + -1x2 + x3

Solving for variable 'x'.

Reorder the terms:
40 + 2x + x2 + -1x3 = -2x + 2x + -1x2 + x2 + x3 + -1x3

Combine like terms: -2x + 2x = 0
40 + 2x + x2 + -1x3 = 0 + -1x2 + x2 + x3 + -1x3
40 + 2x + x2 + -1x3 = -1x2 + x2 + x3 + -1x3

Combine like terms: -1x2 + x2 = 0
40 + 2x + x2 + -1x3 = 0 + x3 + -1x3
40 + 2x + x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
40 + 2x + x2 + -1x3 = 0

The solution to this equation could not be determined.

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