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Simplifying 5t2 + -8t + -8 = 0 Reorder the terms: -8 + -8t + 5t2 = 0 Solving -8 + -8t + 5t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -1.6 + -1.6t + t2 = 0 Move the constant term to the right: Add '1.6' to each side of the equation. -1.6 + -1.6t + 1.6 + t2 = 0 + 1.6 Reorder the terms: -1.6 + 1.6 + -1.6t + t2 = 0 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + -1.6t + t2 = 0 + 1.6 -1.6t + t2 = 0 + 1.6 Combine like terms: 0 + 1.6 = 1.6 -1.6t + t2 = 1.6 The t term is -1.6t. Take half its coefficient (-0.8). Square it (0.64) and add it to both sides. Add '0.64' to each side of the equation. -1.6t + 0.64 + t2 = 1.6 + 0.64 Reorder the terms: 0.64 + -1.6t + t2 = 1.6 + 0.64 Combine like terms: 1.6 + 0.64 = 2.24 0.64 + -1.6t + t2 = 2.24 Factor a perfect square on the left side: (t + -0.8)(t + -0.8) = 2.24 Calculate the square root of the right side: 1.496662955 Break this problem into two subproblems by setting (t + -0.8) equal to 1.496662955 and -1.496662955.Subproblem 1
t + -0.8 = 1.496662955 Simplifying t + -0.8 = 1.496662955 Reorder the terms: -0.8 + t = 1.496662955 Solving -0.8 + t = 1.496662955 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + t = 1.496662955 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + t = 1.496662955 + 0.8 t = 1.496662955 + 0.8 Combine like terms: 1.496662955 + 0.8 = 2.296662955 t = 2.296662955 Simplifying t = 2.296662955Subproblem 2
t + -0.8 = -1.496662955 Simplifying t + -0.8 = -1.496662955 Reorder the terms: -0.8 + t = -1.496662955 Solving -0.8 + t = -1.496662955 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + t = -1.496662955 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + t = -1.496662955 + 0.8 t = -1.496662955 + 0.8 Combine like terms: -1.496662955 + 0.8 = -0.696662955 t = -0.696662955 Simplifying t = -0.696662955Solution
The solution to the problem is based on the solutions from the subproblems. t = {2.296662955, -0.696662955}
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