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

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


Simplifying
(9 + -1u)(2u + 3) = 0

Reorder the terms:
(9 + -1u)(3 + 2u) = 0

Multiply (9 + -1u) * (3 + 2u)
(9(3 + 2u) + -1u * (3 + 2u)) = 0
((3 * 9 + 2u * 9) + -1u * (3 + 2u)) = 0
((27 + 18u) + -1u * (3 + 2u)) = 0
(27 + 18u + (3 * -1u + 2u * -1u)) = 0
(27 + 18u + (-3u + -2u2)) = 0

Combine like terms: 18u + -3u = 15u
(27 + 15u + -2u2) = 0

Solving
27 + 15u + -2u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(9 + -1u)(3 + 2u) = 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 '(3 + 2u)' equal to zero and attempt to solve: Simplifying 3 + 2u = 0 Solving 3 + 2u = 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 + 2u = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2u = 0 + -3 2u = 0 + -3 Combine like terms: 0 + -3 = -3 2u = -3 Divide each side by '2'. u = -1.5 Simplifying u = -1.5

Solution

u = {9, -1.5}

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