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

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


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

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

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

Combine like terms: 5u + 12u = 17u
(-20 + 17u + -3u2) = 0

Solving
-20 + 17u + -3u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-4 + u)(5 + -3u) = 0

Subproblem 1

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