(x-3)(x-1)(x+3)(x+7)=0

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Solution for (x-3)(x-1)(x+3)(x+7)=0 equation: 


Simplifying
(x + -3)(x + -1)(x + 3)(x + 7) = 0

Reorder the terms:
(-3 + x)(x + -1)(x + 3)(x + 7) = 0

Reorder the terms:
(-3 + x)(-1 + x)(x + 3)(x + 7) = 0

Reorder the terms:
(-3 + x)(-1 + x)(3 + x)(x + 7) = 0

Reorder the terms:
(-3 + x)(-1 + x)(3 + x)(7 + x) = 0

Multiply (-3 + x) * (-1 + x)
(-3(-1 + x) + x(-1 + x))(3 + x)(7 + x) = 0
((-1 * -3 + x * -3) + x(-1 + x))(3 + x)(7 + x) = 0
((3 + -3x) + x(-1 + x))(3 + x)(7 + x) = 0
(3 + -3x + (-1 * x + x * x))(3 + x)(7 + x) = 0
(3 + -3x + (-1x + x2))(3 + x)(7 + x) = 0

Combine like terms: -3x + -1x = -4x
(3 + -4x + x2)(3 + x)(7 + x) = 0

Multiply (3 + -4x + x2) * (3 + x)
(3(3 + x) + -4x * (3 + x) + x2(3 + x))(7 + x) = 0
((3 * 3 + x * 3) + -4x * (3 + x) + x2(3 + x))(7 + x) = 0
((9 + 3x) + -4x * (3 + x) + x2(3 + x))(7 + x) = 0
(9 + 3x + (3 * -4x + x * -4x) + x2(3 + x))(7 + x) = 0
(9 + 3x + (-12x + -4x2) + x2(3 + x))(7 + x) = 0
(9 + 3x + -12x + -4x2 + (3 * x2 + x * x2))(7 + x) = 0
(9 + 3x + -12x + -4x2 + (3x2 + x3))(7 + x) = 0

Combine like terms: 3x + -12x = -9x
(9 + -9x + -4x2 + 3x2 + x3)(7 + x) = 0

Combine like terms: -4x2 + 3x2 = -1x2
(9 + -9x + -1x2 + x3)(7 + x) = 0

Multiply (9 + -9x + -1x2 + x3) * (7 + x)
(9(7 + x) + -9x * (7 + x) + -1x2 * (7 + x) + x3(7 + x)) = 0
((7 * 9 + x * 9) + -9x * (7 + x) + -1x2 * (7 + x) + x3(7 + x)) = 0
((63 + 9x) + -9x * (7 + x) + -1x2 * (7 + x) + x3(7 + x)) = 0
(63 + 9x + (7 * -9x + x * -9x) + -1x2 * (7 + x) + x3(7 + x)) = 0
(63 + 9x + (-63x + -9x2) + -1x2 * (7 + x) + x3(7 + x)) = 0
(63 + 9x + -63x + -9x2 + (7 * -1x2 + x * -1x2) + x3(7 + x)) = 0
(63 + 9x + -63x + -9x2 + (-7x2 + -1x3) + x3(7 + x)) = 0
(63 + 9x + -63x + -9x2 + -7x2 + -1x3 + (7 * x3 + x * x3)) = 0
(63 + 9x + -63x + -9x2 + -7x2 + -1x3 + (7x3 + x4)) = 0

Combine like terms: 9x + -63x = -54x
(63 + -54x + -9x2 + -7x2 + -1x3 + 7x3 + x4) = 0

Combine like terms: -9x2 + -7x2 = -16x2
(63 + -54x + -16x2 + -1x3 + 7x3 + x4) = 0

Combine like terms: -1x3 + 7x3 = 6x3
(63 + -54x + -16x2 + 6x3 + x4) = 0

Solving
63 + -54x + -16x2 + 6x3 + x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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