-2u(9u+4)=

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

Simplifying
-2u(9u + 4) = 0

Reorder the terms:
-2u(4 + 9u) = 0
(4 * -2u + 9u * -2u) = 0
(-8u + -18u2) = 0

Solving
-8u + -18u2 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '-2u'.
-2u(4 + 9u) = 0

Ignore the factor -2.
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 '(4 + 9u)' equal to zero and attempt to solve:

Simplifying
4 + 9u = 0

Solving
4 + 9u = 0

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

Add '-4' to each side of the equation.
4 + -4 + 9u = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 9u = 0 + -4
9u = 0 + -4

Combine like terms: 0 + -4 = -4
9u = -4

Divide each side by '9'.
u = -0.4444444444

Simplifying
u = -0.4444444444
Solution
u = {0, -0.4444444444}