8u^3-47u^2-6u=0

Solution for 8u^3-47u^2-6u=0 equation:

Simplifying
8u3 + -47u2 + -6u = 0

Reorder the terms:
-6u + -47u2 + 8u3 = 0

Solving
-6u + -47u2 + 8u3 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), 'u'.
u(-6 + -47u + 8u2) = 0

Factor a trinomial.
u((-1 + -8u)(6 + -1u)) = 0

Subproblem 1
Set the factor 'u' equal to zero and attempt to solve:

Simplifying
u = 0

Solving
u = 0

Move all terms containing u to the left, all other terms to the right.

Simplifying
u = 0
Subproblem 2
Set the factor '(-1 + -8u)' equal to zero and attempt to solve:

Simplifying
-1 + -8u = 0

Solving
-1 + -8u = 0

Move all terms containing u to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + -8u = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -8u = 0 + 1
-8u = 0 + 1

Combine like terms: 0 + 1 = 1
-8u = 1

Divide each side by '-8'.
u = -0.125

Simplifying
u = -0.125
Subproblem 3
Set the factor '(6 + -1u)' equal to zero and attempt to solve:

Simplifying
6 + -1u = 0

Solving
6 + -1u = 0

Move all terms containing u to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + -1u = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1u = 0 + -6
-1u = 0 + -6

Combine like terms: 0 + -6 = -6
-1u = -6

Divide each side by '-1'.
u = 6

Simplifying
u = 6
Solution
u = {0, -0.125, 6}