(3u-2)(9+u)=0

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Solution for (3u-2)(9+u)=0 equation:


Simplifying
(3u + -2)(9 + u) = 0

Reorder the terms:
(-2 + 3u)(9 + u) = 0

Multiply (-2 + 3u) * (9 + u)
(-2(9 + u) + 3u * (9 + u)) = 0
((9 * -2 + u * -2) + 3u * (9 + u)) = 0
((-18 + -2u) + 3u * (9 + u)) = 0
(-18 + -2u + (9 * 3u + u * 3u)) = 0
(-18 + -2u + (27u + 3u2)) = 0

Combine like terms: -2u + 27u = 25u
(-18 + 25u + 3u2) = 0

Solving
-18 + 25u + 3u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-9 + -1u)(2 + -3u) = 0

Subproblem 1

Set the factor '(-9 + -1u)' equal to zero and attempt to solve: Simplifying -9 + -1u = 0 Solving -9 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1u = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1u = 0 + 9 -1u = 0 + 9 Combine like terms: 0 + 9 = 9 -1u = 9 Divide each side by '-1'. u = -9 Simplifying u = -9

Subproblem 2

Set the factor '(2 + -3u)' equal to zero and attempt to solve: Simplifying 2 + -3u = 0 Solving 2 + -3u = 0 Move all terms containing u to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -3u = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3u = 0 + -2 -3u = 0 + -2 Combine like terms: 0 + -2 = -2 -3u = -2 Divide each side by '-3'. u = 0.6666666667 Simplifying u = 0.6666666667

Solution

u = {-9, 0.6666666667}

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