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Simplifying 7t2 + 8t + -2 = 0 Reorder the terms: -2 + 8t + 7t2 = 0 Solving -2 + 8t + 7t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -0.2857142857 + 1.142857143t + t2 = 0 Move the constant term to the right: Add '0.2857142857' to each side of the equation. -0.2857142857 + 1.142857143t + 0.2857142857 + t2 = 0 + 0.2857142857 Reorder the terms: -0.2857142857 + 0.2857142857 + 1.142857143t + t2 = 0 + 0.2857142857 Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000 0.0000000000 + 1.142857143t + t2 = 0 + 0.2857142857 1.142857143t + t2 = 0 + 0.2857142857 Combine like terms: 0 + 0.2857142857 = 0.2857142857 1.142857143t + t2 = 0.2857142857 The t term is 1.142857143t. Take half its coefficient (0.5714285715). Square it (0.3265306123) and add it to both sides. Add '0.3265306123' to each side of the equation. 1.142857143t + 0.3265306123 + t2 = 0.2857142857 + 0.3265306123 Reorder the terms: 0.3265306123 + 1.142857143t + t2 = 0.2857142857 + 0.3265306123 Combine like terms: 0.2857142857 + 0.3265306123 = 0.612244898 0.3265306123 + 1.142857143t + t2 = 0.612244898 Factor a perfect square on the left side: (t + 0.5714285715)(t + 0.5714285715) = 0.612244898 Calculate the square root of the right side: 0.782460796 Break this problem into two subproblems by setting (t + 0.5714285715) equal to 0.782460796 and -0.782460796.Subproblem 1
t + 0.5714285715 = 0.782460796 Simplifying t + 0.5714285715 = 0.782460796 Reorder the terms: 0.5714285715 + t = 0.782460796 Solving 0.5714285715 + t = 0.782460796 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5714285715' to each side of the equation. 0.5714285715 + -0.5714285715 + t = 0.782460796 + -0.5714285715 Combine like terms: 0.5714285715 + -0.5714285715 = 0.0000000000 0.0000000000 + t = 0.782460796 + -0.5714285715 t = 0.782460796 + -0.5714285715 Combine like terms: 0.782460796 + -0.5714285715 = 0.2110322245 t = 0.2110322245 Simplifying t = 0.2110322245Subproblem 2
t + 0.5714285715 = -0.782460796 Simplifying t + 0.5714285715 = -0.782460796 Reorder the terms: 0.5714285715 + t = -0.782460796 Solving 0.5714285715 + t = -0.782460796 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5714285715' to each side of the equation. 0.5714285715 + -0.5714285715 + t = -0.782460796 + -0.5714285715 Combine like terms: 0.5714285715 + -0.5714285715 = 0.0000000000 0.0000000000 + t = -0.782460796 + -0.5714285715 t = -0.782460796 + -0.5714285715 Combine like terms: -0.782460796 + -0.5714285715 = -1.3538893675 t = -1.3538893675 Simplifying t = -1.3538893675Solution
The solution to the problem is based on the solutions from the subproblems. t = {0.2110322245, -1.3538893675}
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