(7u+5x-7)(5u-x-3)=

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Solution for (7u+5x-7)(5u-x-3)= equation: 


Simplifying
(7u + 5x + -7)(5u + -1x + -3) = 0

Reorder the terms:
(-7 + 7u + 5x)(5u + -1x + -3) = 0

Reorder the terms:
(-7 + 7u + 5x)(-3 + 5u + -1x) = 0

Multiply (-7 + 7u + 5x) * (-3 + 5u + -1x)
(-7(-3 + 5u + -1x) + 7u * (-3 + 5u + -1x) + 5x * (-3 + 5u + -1x)) = 0
((-3 * -7 + 5u * -7 + -1x * -7) + 7u * (-3 + 5u + -1x) + 5x * (-3 + 5u + -1x)) = 0
((21 + -35u + 7x) + 7u * (-3 + 5u + -1x) + 5x * (-3 + 5u + -1x)) = 0
(21 + -35u + 7x + (-3 * 7u + 5u * 7u + -1x * 7u) + 5x * (-3 + 5u + -1x)) = 0

Reorder the terms:
(21 + -35u + 7x + (-21u + -7ux + 35u2) + 5x * (-3 + 5u + -1x)) = 0
(21 + -35u + 7x + (-21u + -7ux + 35u2) + 5x * (-3 + 5u + -1x)) = 0
(21 + -35u + 7x + -21u + -7ux + 35u2 + (-3 * 5x + 5u * 5x + -1x * 5x)) = 0

Reorder the terms:
(21 + -35u + 7x + -21u + -7ux + 35u2 + (25ux + -15x + -5x2)) = 0
(21 + -35u + 7x + -21u + -7ux + 35u2 + (25ux + -15x + -5x2)) = 0

Reorder the terms:
(21 + -35u + -21u + -7ux + 25ux + 35u2 + 7x + -15x + -5x2) = 0

Combine like terms: -35u + -21u = -56u
(21 + -56u + -7ux + 25ux + 35u2 + 7x + -15x + -5x2) = 0

Combine like terms: -7ux + 25ux = 18ux
(21 + -56u + 18ux + 35u2 + 7x + -15x + -5x2) = 0

Combine like terms: 7x + -15x = -8x
(21 + -56u + 18ux + 35u2 + -8x + -5x2) = 0

Solving
21 + -56u + 18ux + 35u2 + -8x + -5x2 = 0

Solving for variable 'u'.

The solution to this equation could not be determined.

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