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Simplifying (t + 5)(t + 2) = 18 Reorder the terms: (5 + t)(t + 2) = 18 Reorder the terms: (5 + t)(2 + t) = 18 Multiply (5 + t) * (2 + t) (5(2 + t) + t(2 + t)) = 18 ((2 * 5 + t * 5) + t(2 + t)) = 18 ((10 + 5t) + t(2 + t)) = 18 (10 + 5t + (2 * t + t * t)) = 18 (10 + 5t + (2t + t2)) = 18 Combine like terms: 5t + 2t = 7t (10 + 7t + t2) = 18 Solving 10 + 7t + t2 = 18 Solving for variable 't'. Reorder the terms: 10 + -18 + 7t + t2 = 18 + -18 Combine like terms: 10 + -18 = -8 -8 + 7t + t2 = 18 + -18 Combine like terms: 18 + -18 = 0 -8 + 7t + t2 = 0 Factor a trinomial. (-8 + -1t)(1 + -1t) = 0Subproblem 1
Set the factor '(-8 + -1t)' equal to zero and attempt to solve: Simplifying -8 + -1t = 0 Solving -8 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1t = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1t = 0 + 8 -1t = 0 + 8 Combine like terms: 0 + 8 = 8 -1t = 8 Divide each side by '-1'. t = -8 Simplifying t = -8Subproblem 2
Set the factor '(1 + -1t)' equal to zero and attempt to solve: Simplifying 1 + -1t = 0 Solving 1 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1t = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1t = 0 + -1 -1t = 0 + -1 Combine like terms: 0 + -1 = -1 -1t = -1 Divide each side by '-1'. t = 1 Simplifying t = 1Solution
t = {-8, 1}
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