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

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


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

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

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

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

Reorder the terms:
(21u + 7x + (-5ux + -15u2) + 3x * (3u + x)) = 0
(21u + 7x + (-5ux + -15u2) + 3x * (3u + x)) = 0
(21u + 7x + -5ux + -15u2 + (3u * 3x + x * 3x)) = 0
(21u + 7x + -5ux + -15u2 + (9ux + 3x2)) = 0

Reorder the terms:
(21u + -5ux + 9ux + -15u2 + 7x + 3x2) = 0

Combine like terms: -5ux + 9ux = 4ux
(21u + 4ux + -15u2 + 7x + 3x2) = 0

Solving
21u + 4ux + -15u2 + 7x + 3x2 = 0

Solving for variable 'u'.

The solution to this equation could not be determined.

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