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Simplifying -2t2 + 12t + 9 = 25 Reorder the terms: 9 + 12t + -2t2 = 25 Solving 9 + 12t + -2t2 = 25 Solving for variable 't'. Reorder the terms: 9 + -25 + 12t + -2t2 = 25 + -25 Combine like terms: 9 + -25 = -16 -16 + 12t + -2t2 = 25 + -25 Combine like terms: 25 + -25 = 0 -16 + 12t + -2t2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-8 + 6t + -1t2) = 0 Factor a trinomial. 2((-4 + t)(2 + -1t)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-4 + t)' equal to zero and attempt to solve: Simplifying -4 + t = 0 Solving -4 + t = 0 Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = 0 + 4 Combine like terms: -4 + 4 = 0 0 + t = 0 + 4 t = 0 + 4 Combine like terms: 0 + 4 = 4 t = 4 Simplifying t = 4Subproblem 2
Set the factor '(2 + -1t)' equal to zero and attempt to solve: Simplifying 2 + -1t = 0 Solving 2 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1t = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1t = 0 + -2 -1t = 0 + -2 Combine like terms: 0 + -2 = -2 -1t = -2 Divide each side by '-1'. t = 2 Simplifying t = 2Solution
t = {4, 2}
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