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Simplifying (2u + 5)(9 + u) = 0 Reorder the terms: (5 + 2u)(9 + u) = 0 Multiply (5 + 2u) * (9 + u) (5(9 + u) + 2u * (9 + u)) = 0 ((9 * 5 + u * 5) + 2u * (9 + u)) = 0 ((45 + 5u) + 2u * (9 + u)) = 0 (45 + 5u + (9 * 2u + u * 2u)) = 0 (45 + 5u + (18u + 2u2)) = 0 Combine like terms: 5u + 18u = 23u (45 + 23u + 2u2) = 0 Solving 45 + 23u + 2u2 = 0 Solving for variable 'u'. Factor a trinomial. (9 + u)(5 + 2u) = 0Subproblem 1
Set the factor '(9 + u)' equal to zero and attempt to solve: Simplifying 9 + u = 0 Solving 9 + u = 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 + u = 0 + -9 Combine like terms: 9 + -9 = 0 0 + u = 0 + -9 u = 0 + -9 Combine like terms: 0 + -9 = -9 u = -9 Simplifying u = -9Subproblem 2
Set the factor '(5 + 2u)' equal to zero and attempt to solve: Simplifying 5 + 2u = 0 Solving 5 + 2u = 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 + 2u = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2u = 0 + -5 2u = 0 + -5 Combine like terms: 0 + -5 = -5 2u = -5 Divide each side by '2'. u = -2.5 Simplifying u = -2.5Solution
u = {-9, -2.5}
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