(4u+7)(5-u)=0

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Solution for (4u+7)(5-u)=0 equation:


Simplifying
(4u + 7)(5 + -1u) = 0

Reorder the terms:
(7 + 4u)(5 + -1u) = 0

Multiply (7 + 4u) * (5 + -1u)
(7(5 + -1u) + 4u * (5 + -1u)) = 0
((5 * 7 + -1u * 7) + 4u * (5 + -1u)) = 0
((35 + -7u) + 4u * (5 + -1u)) = 0
(35 + -7u + (5 * 4u + -1u * 4u)) = 0
(35 + -7u + (20u + -4u2)) = 0

Combine like terms: -7u + 20u = 13u
(35 + 13u + -4u2) = 0

Solving
35 + 13u + -4u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(5 + -1u)(7 + 4u) = 0

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 '(7 + 4u)' equal to zero and attempt to solve: Simplifying 7 + 4u = 0 Solving 7 + 4u = 0 Move all terms containing u to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4u = 0 + -7 4u = 0 + -7 Combine like terms: 0 + -7 = -7 4u = -7 Divide each side by '4'. u = -1.75 Simplifying u = -1.75

Solution

u = {5, -1.75}

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