7u(-5-2u)=

Solution for 7u(-5-2u)= equation:

Simplifying
7u(-5 + -2u) = 0
(-5 * 7u + -2u * 7u) = 0
(-35u + -14u2) = 0

Solving
-35u + -14u2 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '-7u'.
-7u(5 + 2u) = 0

Ignore the factor -7.
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 '(5 + 2u)' equal to zero and attempt to solve:

Simplifying
5 + 2u = 0

Solving
5 + 2u = 0

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

Add '-5' to each side of the equation.
5 + -5 + 2u = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2u = 0 + -5
2u = 0 + -5

Combine like terms: 0 + -5 = -5
2u = -5

Divide each side by '2'.
u = -2.5

Simplifying
u = -2.5
Solution
u = {0, -2.5}