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Simplifying 6400 = 640t + -16t2 Solving 6400 = 640t + -16t2 Solving for variable 't'. Reorder the terms: 6400 + -640t + 16t2 = 640t + -640t + -16t2 + 16t2 Combine like terms: 640t + -640t = 0 6400 + -640t + 16t2 = 0 + -16t2 + 16t2 6400 + -640t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 6400 + -640t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '16'. 16(400 + -40t + t2) = 0 Factor a trinomial. 16((20 + -1t)(20 + -1t)) = 0 Ignore the factor 16.Subproblem 1
Set the factor '(20 + -1t)' equal to zero and attempt to solve: Simplifying 20 + -1t = 0 Solving 20 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1t = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1t = 0 + -20 -1t = 0 + -20 Combine like terms: 0 + -20 = -20 -1t = -20 Divide each side by '-1'. t = 20 Simplifying t = 20Subproblem 2
Set the factor '(20 + -1t)' equal to zero and attempt to solve: Simplifying 20 + -1t = 0 Solving 20 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1t = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1t = 0 + -20 -1t = 0 + -20 Combine like terms: 0 + -20 = -20 -1t = -20 Divide each side by '-1'. t = 20 Simplifying t = 20Solution
t = {20, 20}
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