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Simplifying -8t2 + -11t + 56 = 0 Reorder the terms: 56 + -11t + -8t2 = 0 Solving 56 + -11t + -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'. -7 + 1.375t + t2 = 0 Move the constant term to the right: Add '7' to each side of the equation. -7 + 1.375t + 7 + t2 = 0 + 7 Reorder the terms: -7 + 7 + 1.375t + t2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 1.375t + t2 = 0 + 7 1.375t + t2 = 0 + 7 Combine like terms: 0 + 7 = 7 1.375t + t2 = 7 The t term is 1.375t. Take half its coefficient (0.6875). Square it (0.47265625) and add it to both sides. Add '0.47265625' to each side of the equation. 1.375t + 0.47265625 + t2 = 7 + 0.47265625 Reorder the terms: 0.47265625 + 1.375t + t2 = 7 + 0.47265625 Combine like terms: 7 + 0.47265625 = 7.47265625 0.47265625 + 1.375t + t2 = 7.47265625 Factor a perfect square on the left side: (t + 0.6875)(t + 0.6875) = 7.47265625 Calculate the square root of the right side: 2.733615966 Break this problem into two subproblems by setting (t + 0.6875) equal to 2.733615966 and -2.733615966.Subproblem 1
t + 0.6875 = 2.733615966 Simplifying t + 0.6875 = 2.733615966 Reorder the terms: 0.6875 + t = 2.733615966 Solving 0.6875 + t = 2.733615966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6875' to each side of the equation. 0.6875 + -0.6875 + t = 2.733615966 + -0.6875 Combine like terms: 0.6875 + -0.6875 = 0.0000 0.0000 + t = 2.733615966 + -0.6875 t = 2.733615966 + -0.6875 Combine like terms: 2.733615966 + -0.6875 = 2.046115966 t = 2.046115966 Simplifying t = 2.046115966Subproblem 2
t + 0.6875 = -2.733615966 Simplifying t + 0.6875 = -2.733615966 Reorder the terms: 0.6875 + t = -2.733615966 Solving 0.6875 + t = -2.733615966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6875' to each side of the equation. 0.6875 + -0.6875 + t = -2.733615966 + -0.6875 Combine like terms: 0.6875 + -0.6875 = 0.0000 0.0000 + t = -2.733615966 + -0.6875 t = -2.733615966 + -0.6875 Combine like terms: -2.733615966 + -0.6875 = -3.421115966 t = -3.421115966 Simplifying t = -3.421115966Solution
The solution to the problem is based on the solutions from the subproblems. t = {2.046115966, -3.421115966}
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