(4-u)(3u+5)=0

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Solution for (4-u)(3u+5)=0 equation:


Simplifying
(4 + -1u)(3u + 5) = 0

Reorder the terms:
(4 + -1u)(5 + 3u) = 0

Multiply (4 + -1u) * (5 + 3u)
(4(5 + 3u) + -1u * (5 + 3u)) = 0
((5 * 4 + 3u * 4) + -1u * (5 + 3u)) = 0
((20 + 12u) + -1u * (5 + 3u)) = 0
(20 + 12u + (5 * -1u + 3u * -1u)) = 0
(20 + 12u + (-5u + -3u2)) = 0

Combine like terms: 12u + -5u = 7u
(20 + 7u + -3u2) = 0

Solving
20 + 7u + -3u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(4 + -1u)(5 + 3u) = 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 '(5 + 3u)' equal to zero and attempt to solve: Simplifying 5 + 3u = 0 Solving 5 + 3u = 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 + 3u = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3u = 0 + -5 3u = 0 + -5 Combine like terms: 0 + -5 = -5 3u = -5 Divide each side by '3'. u = -1.666666667 Simplifying u = -1.666666667

Solution

u = {4, -1.666666667}

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