(9-4u)(5+u+8u^2)=

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Solution for (9-4u)(5+u+8u^2)= equation: 


Simplifying
(9 + -4u)(5 + u + 8u2) = 0

Multiply (9 + -4u) * (5 + u + 8u2)
(9(5 + u + 8u2) + -4u * (5 + u + 8u2)) = 0
((5 * 9 + u * 9 + 8u2 * 9) + -4u * (5 + u + 8u2)) = 0
((45 + 9u + 72u2) + -4u * (5 + u + 8u2)) = 0
(45 + 9u + 72u2 + (5 * -4u + u * -4u + 8u2 * -4u)) = 0
(45 + 9u + 72u2 + (-20u + -4u2 + -32u3)) = 0

Reorder the terms:
(45 + 9u + -20u + 72u2 + -4u2 + -32u3) = 0

Combine like terms: 9u + -20u = -11u
(45 + -11u + 72u2 + -4u2 + -32u3) = 0

Combine like terms: 72u2 + -4u2 = 68u2
(45 + -11u + 68u2 + -32u3) = 0

Solving
45 + -11u + 68u2 + -32u3 = 0

Solving for variable 'u'.

The solution to this equation could not be determined.

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