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Simplifying 0 = -16t2 + 20t + 12 Reorder the terms: 0 = 12 + 20t + -16t2 Solving 0 = 12 + 20t + -16t2 Solving for variable 't'. Combine like terms: 0 + -12 = -12 -12 + -20t + 16t2 = 12 + 20t + -16t2 + -12 + -20t + 16t2 Reorder the terms: -12 + -20t + 16t2 = 12 + -12 + 20t + -20t + -16t2 + 16t2 Combine like terms: 12 + -12 = 0 -12 + -20t + 16t2 = 0 + 20t + -20t + -16t2 + 16t2 -12 + -20t + 16t2 = 20t + -20t + -16t2 + 16t2 Combine like terms: 20t + -20t = 0 -12 + -20t + 16t2 = 0 + -16t2 + 16t2 -12 + -20t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 -12 + -20t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-3 + -5t + 4t2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-3 + -5t + 4t2)' equal to zero and attempt to solve: Simplifying -3 + -5t + 4t2 = 0 Solving -3 + -5t + 4t2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -0.75 + -1.25t + t2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + -1.25t + 0.75 + t2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + -1.25t + t2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + -1.25t + t2 = 0 + 0.75 -1.25t + t2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 -1.25t + t2 = 0.75 The t term is -1.25t. Take half its coefficient (-0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. -1.25t + 0.390625 + t2 = 0.75 + 0.390625 Reorder the terms: 0.390625 + -1.25t + t2 = 0.75 + 0.390625 Combine like terms: 0.75 + 0.390625 = 1.140625 0.390625 + -1.25t + t2 = 1.140625 Factor a perfect square on the left side: (t + -0.625)(t + -0.625) = 1.140625 Calculate the square root of the right side: 1.068000468 Break this problem into two subproblems by setting (t + -0.625) equal to 1.068000468 and -1.068000468.Subproblem 1
t + -0.625 = 1.068000468 Simplifying t + -0.625 = 1.068000468 Reorder the terms: -0.625 + t = 1.068000468 Solving -0.625 + t = 1.068000468 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = 1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = 1.068000468 + 0.625 t = 1.068000468 + 0.625 Combine like terms: 1.068000468 + 0.625 = 1.693000468 t = 1.693000468 Simplifying t = 1.693000468Subproblem 2
t + -0.625 = -1.068000468 Simplifying t + -0.625 = -1.068000468 Reorder the terms: -0.625 + t = -1.068000468 Solving -0.625 + t = -1.068000468 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = -1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = -1.068000468 + 0.625 t = -1.068000468 + 0.625 Combine like terms: -1.068000468 + 0.625 = -0.443000468 t = -0.443000468 Simplifying t = -0.443000468Solution
The solution to the problem is based on the solutions from the subproblems. t = {1.693000468, -0.443000468}Solution
t = {1.693000468, -0.443000468}
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