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Simplifying 8t2 + 9t + -5 = 0 Reorder the terms: -5 + 9t + 8t2 = 0 Solving -5 + 9t + 8t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -0.625 + 1.125t + t2 = 0 Move the constant term to the right: Add '0.625' to each side of the equation. -0.625 + 1.125t + 0.625 + t2 = 0 + 0.625 Reorder the terms: -0.625 + 0.625 + 1.125t + t2 = 0 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + 1.125t + t2 = 0 + 0.625 1.125t + t2 = 0 + 0.625 Combine like terms: 0 + 0.625 = 0.625 1.125t + t2 = 0.625 The t term is 1.125t. Take half its coefficient (0.5625). Square it (0.31640625) and add it to both sides. Add '0.31640625' to each side of the equation. 1.125t + 0.31640625 + t2 = 0.625 + 0.31640625 Reorder the terms: 0.31640625 + 1.125t + t2 = 0.625 + 0.31640625 Combine like terms: 0.625 + 0.31640625 = 0.94140625 0.31640625 + 1.125t + t2 = 0.94140625 Factor a perfect square on the left side: (t + 0.5625)(t + 0.5625) = 0.94140625 Calculate the square root of the right side: 0.970260919 Break this problem into two subproblems by setting (t + 0.5625) equal to 0.970260919 and -0.970260919.Subproblem 1
t + 0.5625 = 0.970260919 Simplifying t + 0.5625 = 0.970260919 Reorder the terms: 0.5625 + t = 0.970260919 Solving 0.5625 + t = 0.970260919 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5625' to each side of the equation. 0.5625 + -0.5625 + t = 0.970260919 + -0.5625 Combine like terms: 0.5625 + -0.5625 = 0.0000 0.0000 + t = 0.970260919 + -0.5625 t = 0.970260919 + -0.5625 Combine like terms: 0.970260919 + -0.5625 = 0.407760919 t = 0.407760919 Simplifying t = 0.407760919Subproblem 2
t + 0.5625 = -0.970260919 Simplifying t + 0.5625 = -0.970260919 Reorder the terms: 0.5625 + t = -0.970260919 Solving 0.5625 + t = -0.970260919 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5625' to each side of the equation. 0.5625 + -0.5625 + t = -0.970260919 + -0.5625 Combine like terms: 0.5625 + -0.5625 = 0.0000 0.0000 + t = -0.970260919 + -0.5625 t = -0.970260919 + -0.5625 Combine like terms: -0.970260919 + -0.5625 = -1.532760919 t = -1.532760919 Simplifying t = -1.532760919Solution
The solution to the problem is based on the solutions from the subproblems. t = {0.407760919, -1.532760919}
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