(5y-u+4)(y-4u)=0

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Solution for (5y-u+4)(y-4u)=0 equation: 


Simplifying
(5y + -1u + 4)(y + -4u) = 0

Reorder the terms:
(4 + -1u + 5y)(y + -4u) = 0

Reorder the terms:
(4 + -1u + 5y)(-4u + y) = 0

Multiply (4 + -1u + 5y) * (-4u + y)
(4(-4u + y) + -1u * (-4u + y) + 5y * (-4u + y)) = 0
((-4u * 4 + y * 4) + -1u * (-4u + y) + 5y * (-4u + y)) = 0
((-16u + 4y) + -1u * (-4u + y) + 5y * (-4u + y)) = 0
(-16u + 4y + (-4u * -1u + y * -1u) + 5y * (-4u + y)) = 0

Reorder the terms:
(-16u + 4y + (-1uy + 4u2) + 5y * (-4u + y)) = 0
(-16u + 4y + (-1uy + 4u2) + 5y * (-4u + y)) = 0
(-16u + 4y + -1uy + 4u2 + (-4u * 5y + y * 5y)) = 0
(-16u + 4y + -1uy + 4u2 + (-20uy + 5y2)) = 0

Reorder the terms:
(-16u + -1uy + -20uy + 4u2 + 4y + 5y2) = 0

Combine like terms: -1uy + -20uy = -21uy
(-16u + -21uy + 4u2 + 4y + 5y2) = 0

Solving
-16u + -21uy + 4u2 + 4y + 5y2 = 0

Solving for variable 'u'.

The solution to this equation could not be determined.

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