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Simplifying 4t2 + -16t + -7 = 0 Reorder the terms: -7 + -16t + 4t2 = 0 Solving -7 + -16t + 4t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.75 + -4t + t2 = 0 Move the constant term to the right: Add '1.75' to each side of the equation. -1.75 + -4t + 1.75 + t2 = 0 + 1.75 Reorder the terms: -1.75 + 1.75 + -4t + t2 = 0 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + -4t + t2 = 0 + 1.75 -4t + t2 = 0 + 1.75 Combine like terms: 0 + 1.75 = 1.75 -4t + t2 = 1.75 The t term is -4t. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4t + 4 + t2 = 1.75 + 4 Reorder the terms: 4 + -4t + t2 = 1.75 + 4 Combine like terms: 1.75 + 4 = 5.75 4 + -4t + t2 = 5.75 Factor a perfect square on the left side: (t + -2)(t + -2) = 5.75 Calculate the square root of the right side: 2.397915762 Break this problem into two subproblems by setting (t + -2) equal to 2.397915762 and -2.397915762.Subproblem 1
t + -2 = 2.397915762 Simplifying t + -2 = 2.397915762 Reorder the terms: -2 + t = 2.397915762 Solving -2 + t = 2.397915762 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = 2.397915762 + 2 Combine like terms: -2 + 2 = 0 0 + t = 2.397915762 + 2 t = 2.397915762 + 2 Combine like terms: 2.397915762 + 2 = 4.397915762 t = 4.397915762 Simplifying t = 4.397915762Subproblem 2
t + -2 = -2.397915762 Simplifying t + -2 = -2.397915762 Reorder the terms: -2 + t = -2.397915762 Solving -2 + t = -2.397915762 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = -2.397915762 + 2 Combine like terms: -2 + 2 = 0 0 + t = -2.397915762 + 2 t = -2.397915762 + 2 Combine like terms: -2.397915762 + 2 = -0.397915762 t = -0.397915762 Simplifying t = -0.397915762Solution
The solution to the problem is based on the solutions from the subproblems. t = {4.397915762, -0.397915762}
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