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Simplifying l2 + -2l + -120 = 0 Reorder the terms: -120 + -2l + l2 = 0 Solving -120 + -2l + l2 = 0 Solving for variable 'l'. Factor a trinomial. (-10 + -1l)(12 + -1l) = 0Subproblem 1
Set the factor '(-10 + -1l)' equal to zero and attempt to solve: Simplifying -10 + -1l = 0 Solving -10 + -1l = 0 Move all terms containing l to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1l = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1l = 0 + 10 -1l = 0 + 10 Combine like terms: 0 + 10 = 10 -1l = 10 Divide each side by '-1'. l = -10 Simplifying l = -10Subproblem 2
Set the factor '(12 + -1l)' equal to zero and attempt to solve: Simplifying 12 + -1l = 0 Solving 12 + -1l = 0 Move all terms containing l to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1l = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1l = 0 + -12 -1l = 0 + -12 Combine like terms: 0 + -12 = -12 -1l = -12 Divide each side by '-1'. l = 12 Simplifying l = 12Solution
l = {-10, 12}
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