(4u-6)(5+u)=0

Solution for (4u-6)(5+u)=0 equation:

Simplifying
(4u + -6)(5 + u) = 0

Reorder the terms:
(-6 + 4u)(5 + u) = 0

Multiply (-6 + 4u) * (5 + u)
(-6(5 + u) + 4u * (5 + u)) = 0
((5 * -6 + u * -6) + 4u * (5 + u)) = 0
((-30 + -6u) + 4u * (5 + u)) = 0
(-30 + -6u + (5 * 4u + u * 4u)) = 0
(-30 + -6u + (20u + 4u2)) = 0

Combine like terms: -6u + 20u = 14u
(-30 + 14u + 4u2) = 0

Solving
-30 + 14u + 4u2 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-15 + 7u + 2u2) = 0

Factor a trinomial.
2((-5 + -1u)(3 + -2u)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-5 + -1u)' equal to zero and attempt to solve:

Simplifying
-5 + -1u = 0

Solving
-5 + -1u = 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 + -1u = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1u = 0 + 5
-1u = 0 + 5

Combine like terms: 0 + 5 = 5
-1u = 5

Divide each side by '-1'.
u = -5

Simplifying
u = -5
Subproblem 2
Set the factor '(3 + -2u)' equal to zero and attempt to solve:

Simplifying
3 + -2u = 0

Solving
3 + -2u = 0

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

Add '-3' to each side of the equation.
3 + -3 + -2u = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2u = 0 + -3
-2u = 0 + -3

Combine like terms: 0 + -3 = -3
-2u = -3

Divide each side by '-2'.
u = 1.5

Simplifying
u = 1.5
Solution
u = {-5, 1.5}