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Simplifying u2 + 3u + -70 = 0 Reorder the terms: -70 + 3u + u2 = 0 Solving -70 + 3u + u2 = 0 Solving for variable 'u'. Factor a trinomial. (-10 + -1u)(7 + -1u) = 0Subproblem 1
Set the factor '(-10 + -1u)' equal to zero and attempt to solve: Simplifying -10 + -1u = 0 Solving -10 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1u = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1u = 0 + 10 -1u = 0 + 10 Combine like terms: 0 + 10 = 10 -1u = 10 Divide each side by '-1'. u = -10 Simplifying u = -10Subproblem 2
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 = 7Solution
u = {-10, 7}
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