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Simplifying 30 = -16t2 + 50t + 4 Reorder the terms: 30 = 4 + 50t + -16t2 Solving 30 = 4 + 50t + -16t2 Solving for variable 't'. Combine like terms: 30 + -4 = 26 26 + -50t + 16t2 = 4 + 50t + -16t2 + -4 + -50t + 16t2 Reorder the terms: 26 + -50t + 16t2 = 4 + -4 + 50t + -50t + -16t2 + 16t2 Combine like terms: 4 + -4 = 0 26 + -50t + 16t2 = 0 + 50t + -50t + -16t2 + 16t2 26 + -50t + 16t2 = 50t + -50t + -16t2 + 16t2 Combine like terms: 50t + -50t = 0 26 + -50t + 16t2 = 0 + -16t2 + 16t2 26 + -50t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 26 + -50t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(13 + -25t + 8t2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(13 + -25t + 8t2)' equal to zero and attempt to solve: Simplifying 13 + -25t + 8t2 = 0 Solving 13 + -25t + 8t2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 1.625 + -3.125t + t2 = 0 Move the constant term to the right: Add '-1.625' to each side of the equation. 1.625 + -3.125t + -1.625 + t2 = 0 + -1.625 Reorder the terms: 1.625 + -1.625 + -3.125t + t2 = 0 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + -3.125t + t2 = 0 + -1.625 -3.125t + t2 = 0 + -1.625 Combine like terms: 0 + -1.625 = -1.625 -3.125t + t2 = -1.625 The t term is -3.125t. Take half its coefficient (-1.5625). Square it (2.44140625) and add it to both sides. Add '2.44140625' to each side of the equation. -3.125t + 2.44140625 + t2 = -1.625 + 2.44140625 Reorder the terms: 2.44140625 + -3.125t + t2 = -1.625 + 2.44140625 Combine like terms: -1.625 + 2.44140625 = 0.81640625 2.44140625 + -3.125t + t2 = 0.81640625 Factor a perfect square on the left side: (t + -1.5625)(t + -1.5625) = 0.81640625 Calculate the square root of the right side: 0.903552018 Break this problem into two subproblems by setting (t + -1.5625) equal to 0.903552018 and -0.903552018.Subproblem 1
t + -1.5625 = 0.903552018 Simplifying t + -1.5625 = 0.903552018 Reorder the terms: -1.5625 + t = 0.903552018 Solving -1.5625 + t = 0.903552018 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + t = 0.903552018 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = 0.903552018 + 1.5625 t = 0.903552018 + 1.5625 Combine like terms: 0.903552018 + 1.5625 = 2.466052018 t = 2.466052018 Simplifying t = 2.466052018Subproblem 2
t + -1.5625 = -0.903552018 Simplifying t + -1.5625 = -0.903552018 Reorder the terms: -1.5625 + t = -0.903552018 Solving -1.5625 + t = -0.903552018 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + t = -0.903552018 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = -0.903552018 + 1.5625 t = -0.903552018 + 1.5625 Combine like terms: -0.903552018 + 1.5625 = 0.658947982 t = 0.658947982 Simplifying t = 0.658947982Solution
The solution to the problem is based on the solutions from the subproblems. t = {2.466052018, 0.658947982}Solution
t = {2.466052018, 0.658947982}
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