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

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


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

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

Multiply (7 + 4u) * (4 + -1u)
(7(4 + -1u) + 4u * (4 + -1u)) = 0
((4 * 7 + -1u * 7) + 4u * (4 + -1u)) = 0
((28 + -7u) + 4u * (4 + -1u)) = 0
(28 + -7u + (4 * 4u + -1u * 4u)) = 0
(28 + -7u + (16u + -4u2)) = 0

Combine like terms: -7u + 16u = 9u
(28 + 9u + -4u2) = 0

Solving
28 + 9u + -4u2 = 0

Solving for variable 'u'.

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

Subproblem 1

Set the factor '(4 + -1u)' equal to zero and attempt to solve: Simplifying 4 + -1u = 0 Solving 4 + -1u = 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 + -1u = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1u = 0 + -4 -1u = 0 + -4 Combine like terms: 0 + -4 = -4 -1u = -4 Divide each side by '-1'. u = 4 Simplifying u = 4

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 = {4, -1.75}

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