(u+4)(u+3)(4u-20)=0

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Solution for (u+4)(u+3)(4u-20)=0 equation: 


Simplifying
(u + 4)(u + 3)(4u + -20) = 0

Reorder the terms:
(4 + u)(u + 3)(4u + -20) = 0

Reorder the terms:
(4 + u)(3 + u)(4u + -20) = 0

Reorder the terms:
(4 + u)(3 + u)(-20 + 4u) = 0

Multiply (4 + u) * (3 + u)
(4(3 + u) + u(3 + u))(-20 + 4u) = 0
((3 * 4 + u * 4) + u(3 + u))(-20 + 4u) = 0
((12 + 4u) + u(3 + u))(-20 + 4u) = 0
(12 + 4u + (3 * u + u * u))(-20 + 4u) = 0
(12 + 4u + (3u + u2))(-20 + 4u) = 0

Combine like terms: 4u + 3u = 7u
(12 + 7u + u2)(-20 + 4u) = 0

Multiply (12 + 7u + u2) * (-20 + 4u)
(12(-20 + 4u) + 7u * (-20 + 4u) + u2(-20 + 4u)) = 0
((-20 * 12 + 4u * 12) + 7u * (-20 + 4u) + u2(-20 + 4u)) = 0
((-240 + 48u) + 7u * (-20 + 4u) + u2(-20 + 4u)) = 0
(-240 + 48u + (-20 * 7u + 4u * 7u) + u2(-20 + 4u)) = 0
(-240 + 48u + (-140u + 28u2) + u2(-20 + 4u)) = 0
(-240 + 48u + -140u + 28u2 + (-20 * u2 + 4u * u2)) = 0
(-240 + 48u + -140u + 28u2 + (-20u2 + 4u3)) = 0

Combine like terms: 48u + -140u = -92u
(-240 + -92u + 28u2 + -20u2 + 4u3) = 0

Combine like terms: 28u2 + -20u2 = 8u2
(-240 + -92u + 8u2 + 4u3) = 0

Solving
-240 + -92u + 8u2 + 4u3 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-60 + -23u + 2u2 + u3) = 0

Ignore the factor 4.

Subproblem 1
Set the factor '(-60 + -23u + 2u2 + u3)' equal to zero and attempt to solve:

Simplifying
-60 + -23u + 2u2 + u3 = 0

Solving
-60 + -23u + 2u2 + u3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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