(x-1)(x-9)(x+4)=0

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Solution for (x-1)(x-9)(x+4)=0 equation: 


Simplifying
(x + -1)(x + -9)(x + 4) = 0

Reorder the terms:
(-1 + x)(x + -9)(x + 4) = 0

Reorder the terms:
(-1 + x)(-9 + x)(x + 4) = 0

Reorder the terms:
(-1 + x)(-9 + x)(4 + x) = 0

Multiply (-1 + x) * (-9 + x)
(-1(-9 + x) + x(-9 + x))(4 + x) = 0
((-9 * -1 + x * -1) + x(-9 + x))(4 + x) = 0
((9 + -1x) + x(-9 + x))(4 + x) = 0
(9 + -1x + (-9 * x + x * x))(4 + x) = 0
(9 + -1x + (-9x + x2))(4 + x) = 0

Combine like terms: -1x + -9x = -10x
(9 + -10x + x2)(4 + x) = 0

Multiply (9 + -10x + x2) * (4 + x)
(9(4 + x) + -10x * (4 + x) + x2(4 + x)) = 0
((4 * 9 + x * 9) + -10x * (4 + x) + x2(4 + x)) = 0
((36 + 9x) + -10x * (4 + x) + x2(4 + x)) = 0
(36 + 9x + (4 * -10x + x * -10x) + x2(4 + x)) = 0
(36 + 9x + (-40x + -10x2) + x2(4 + x)) = 0
(36 + 9x + -40x + -10x2 + (4 * x2 + x * x2)) = 0
(36 + 9x + -40x + -10x2 + (4x2 + x3)) = 0

Combine like terms: 9x + -40x = -31x
(36 + -31x + -10x2 + 4x2 + x3) = 0

Combine like terms: -10x2 + 4x2 = -6x2
(36 + -31x + -6x2 + x3) = 0

Solving
36 + -31x + -6x2 + x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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