(3u+8)(3-u)=0

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Solution for (3u+8)(3-u)=0 equation:


Simplifying
(3u + 8)(3 + -1u) = 0

Reorder the terms:
(8 + 3u)(3 + -1u) = 0

Multiply (8 + 3u) * (3 + -1u)
(8(3 + -1u) + 3u * (3 + -1u)) = 0
((3 * 8 + -1u * 8) + 3u * (3 + -1u)) = 0
((24 + -8u) + 3u * (3 + -1u)) = 0
(24 + -8u + (3 * 3u + -1u * 3u)) = 0
(24 + -8u + (9u + -3u2)) = 0

Combine like terms: -8u + 9u = 1u
(24 + 1u + -3u2) = 0

Solving
24 + 1u + -3u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(3 + -1u)(8 + 3u) = 0

Subproblem 1

Set the factor '(3 + -1u)' equal to zero and attempt to solve: Simplifying 3 + -1u = 0 Solving 3 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1u = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1u = 0 + -3 -1u = 0 + -3 Combine like terms: 0 + -3 = -3 -1u = -3 Divide each side by '-1'. u = 3 Simplifying u = 3

Subproblem 2

Set the factor '(8 + 3u)' equal to zero and attempt to solve: Simplifying 8 + 3u = 0 Solving 8 + 3u = 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 + 3u = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3u = 0 + -8 3u = 0 + -8 Combine like terms: 0 + -8 = -8 3u = -8 Divide each side by '3'. u = -2.666666667 Simplifying u = -2.666666667

Solution

u = {3, -2.666666667}

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