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Simplifying (7 + -1u)(3u + 8) = 0 Reorder the terms: (7 + -1u)(8 + 3u) = 0 Multiply (7 + -1u) * (8 + 3u) (7(8 + 3u) + -1u * (8 + 3u)) = 0 ((8 * 7 + 3u * 7) + -1u * (8 + 3u)) = 0 ((56 + 21u) + -1u * (8 + 3u)) = 0 (56 + 21u + (8 * -1u + 3u * -1u)) = 0 (56 + 21u + (-8u + -3u2)) = 0 Combine like terms: 21u + -8u = 13u (56 + 13u + -3u2) = 0 Solving 56 + 13u + -3u2 = 0 Solving for variable 'u'. Factor a trinomial. (7 + -1u)(8 + 3u) = 0Subproblem 1
Set the factor '(7 + -1u)' equal to zero and attempt to solve: Simplifying 7 + -1u = 0 Solving 7 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1u = 0 + -7 -1u = 0 + -7 Combine like terms: 0 + -7 = -7 -1u = -7 Divide each side by '-1'. u = 7 Simplifying u = 7Subproblem 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 = -2.666666667Solution
u = {7, -2.666666667}
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