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Simplifying 0 = 8t2 + -7t + -2 Reorder the terms: 0 = -2 + -7t + 8t2 Solving 0 = -2 + -7t + 8t2 Solving for variable 't'. Combine like terms: 0 + 2 = 2 2 + 7t + -8t2 = -2 + -7t + 8t2 + 2 + 7t + -8t2 Reorder the terms: 2 + 7t + -8t2 = -2 + 2 + -7t + 7t + 8t2 + -8t2 Combine like terms: -2 + 2 = 0 2 + 7t + -8t2 = 0 + -7t + 7t + 8t2 + -8t2 2 + 7t + -8t2 = -7t + 7t + 8t2 + -8t2 Combine like terms: -7t + 7t = 0 2 + 7t + -8t2 = 0 + 8t2 + -8t2 2 + 7t + -8t2 = 8t2 + -8t2 Combine like terms: 8t2 + -8t2 = 0 2 + 7t + -8t2 = 0 Begin completing the square. Divide all terms by -8 the coefficient of the squared term: Divide each side by '-8'. -0.25 + -0.875t + t2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + -0.875t + 0.25 + t2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + -0.875t + t2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + -0.875t + t2 = 0 + 0.25 -0.875t + t2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 -0.875t + t2 = 0.25 The t term is -0.875t. Take half its coefficient (-0.4375). Square it (0.19140625) and add it to both sides. Add '0.19140625' to each side of the equation. -0.875t + 0.19140625 + t2 = 0.25 + 0.19140625 Reorder the terms: 0.19140625 + -0.875t + t2 = 0.25 + 0.19140625 Combine like terms: 0.25 + 0.19140625 = 0.44140625 0.19140625 + -0.875t + t2 = 0.44140625 Factor a perfect square on the left side: (t + -0.4375)(t + -0.4375) = 0.44140625 Calculate the square root of the right side: 0.664384113 Break this problem into two subproblems by setting (t + -0.4375) equal to 0.664384113 and -0.664384113.Subproblem 1
t + -0.4375 = 0.664384113 Simplifying t + -0.4375 = 0.664384113 Reorder the terms: -0.4375 + t = 0.664384113 Solving -0.4375 + t = 0.664384113 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + t = 0.664384113 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + t = 0.664384113 + 0.4375 t = 0.664384113 + 0.4375 Combine like terms: 0.664384113 + 0.4375 = 1.101884113 t = 1.101884113 Simplifying t = 1.101884113Subproblem 2
t + -0.4375 = -0.664384113 Simplifying t + -0.4375 = -0.664384113 Reorder the terms: -0.4375 + t = -0.664384113 Solving -0.4375 + t = -0.664384113 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + t = -0.664384113 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + t = -0.664384113 + 0.4375 t = -0.664384113 + 0.4375 Combine like terms: -0.664384113 + 0.4375 = -0.226884113 t = -0.226884113 Simplifying t = -0.226884113Solution
The solution to the problem is based on the solutions from the subproblems. t = {1.101884113, -0.226884113}
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