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Simplifying -16t2 + 50t + 15 = 0 Reorder the terms: 15 + 50t + -16t2 = 0 Solving 15 + 50t + -16t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by -16 the coefficient of the squared term: Divide each side by '-16'. -0.9375 + -3.125t + t2 = 0 Move the constant term to the right: Add '0.9375' to each side of the equation. -0.9375 + -3.125t + 0.9375 + t2 = 0 + 0.9375 Reorder the terms: -0.9375 + 0.9375 + -3.125t + t2 = 0 + 0.9375 Combine like terms: -0.9375 + 0.9375 = 0.0000 0.0000 + -3.125t + t2 = 0 + 0.9375 -3.125t + t2 = 0 + 0.9375 Combine like terms: 0 + 0.9375 = 0.9375 -3.125t + t2 = 0.9375 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 = 0.9375 + 2.44140625 Reorder the terms: 2.44140625 + -3.125t + t2 = 0.9375 + 2.44140625 Combine like terms: 0.9375 + 2.44140625 = 3.37890625 2.44140625 + -3.125t + t2 = 3.37890625 Factor a perfect square on the left side: (t + -1.5625)(t + -1.5625) = 3.37890625 Calculate the square root of the right side: 1.838180146 Break this problem into two subproblems by setting (t + -1.5625) equal to 1.838180146 and -1.838180146.Subproblem 1
t + -1.5625 = 1.838180146 Simplifying t + -1.5625 = 1.838180146 Reorder the terms: -1.5625 + t = 1.838180146 Solving -1.5625 + t = 1.838180146 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 = 1.838180146 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = 1.838180146 + 1.5625 t = 1.838180146 + 1.5625 Combine like terms: 1.838180146 + 1.5625 = 3.400680146 t = 3.400680146 Simplifying t = 3.400680146Subproblem 2
t + -1.5625 = -1.838180146 Simplifying t + -1.5625 = -1.838180146 Reorder the terms: -1.5625 + t = -1.838180146 Solving -1.5625 + t = -1.838180146 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 = -1.838180146 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = -1.838180146 + 1.5625 t = -1.838180146 + 1.5625 Combine like terms: -1.838180146 + 1.5625 = -0.275680146 t = -0.275680146 Simplifying t = -0.275680146Solution
The solution to the problem is based on the solutions from the subproblems. t = {3.400680146, -0.275680146}
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