(4u+5)(8+u)=0

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Solution for (4u+5)(8+u)=0 equation:


Simplifying
(4u + 5)(8 + u) = 0

Reorder the terms:
(5 + 4u)(8 + u) = 0

Multiply (5 + 4u) * (8 + u)
(5(8 + u) + 4u * (8 + u)) = 0
((8 * 5 + u * 5) + 4u * (8 + u)) = 0
((40 + 5u) + 4u * (8 + u)) = 0
(40 + 5u + (8 * 4u + u * 4u)) = 0
(40 + 5u + (32u + 4u2)) = 0

Combine like terms: 5u + 32u = 37u
(40 + 37u + 4u2) = 0

Solving
40 + 37u + 4u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(8 + u)(5 + 4u) = 0

Subproblem 1

Set the factor '(8 + u)' equal to zero and attempt to solve: Simplifying 8 + u = 0 Solving 8 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + u = 0 + -8 Combine like terms: 8 + -8 = 0 0 + u = 0 + -8 u = 0 + -8 Combine like terms: 0 + -8 = -8 u = -8 Simplifying u = -8

Subproblem 2

Set the factor '(5 + 4u)' equal to zero and attempt to solve: Simplifying 5 + 4u = 0 Solving 5 + 4u = 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 + 4u = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 4u = 0 + -5 4u = 0 + -5 Combine like terms: 0 + -5 = -5 4u = -5 Divide each side by '4'. u = -1.25 Simplifying u = -1.25

Solution

u = {-8, -1.25}

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