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Simplifying 4.9t2 + -7t + -3 = 0 Reorder the terms: -3 + -7t + 4.9t2 = 0 Solving -3 + -7t + 4.9t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by 4.9 the coefficient of the squared term: Divide each side by '4.9'. -0.612244898 + -1.428571429t + t2 = 0 Move the constant term to the right: Add '0.612244898' to each side of the equation. -0.612244898 + -1.428571429t + 0.612244898 + t2 = 0 + 0.612244898 Reorder the terms: -0.612244898 + 0.612244898 + -1.428571429t + t2 = 0 + 0.612244898 Combine like terms: -0.612244898 + 0.612244898 = 0.000000000 0.000000000 + -1.428571429t + t2 = 0 + 0.612244898 -1.428571429t + t2 = 0 + 0.612244898 Combine like terms: 0 + 0.612244898 = 0.612244898 -1.428571429t + t2 = 0.612244898 The t term is -1.428571429t. Take half its coefficient (-0.7142857145). Square it (0.5102040819) and add it to both sides. Add '0.5102040819' to each side of the equation. -1.428571429t + 0.5102040819 + t2 = 0.612244898 + 0.5102040819 Reorder the terms: 0.5102040819 + -1.428571429t + t2 = 0.612244898 + 0.5102040819 Combine like terms: 0.612244898 + 0.5102040819 = 1.1224489799 0.5102040819 + -1.428571429t + t2 = 1.1224489799 Factor a perfect square on the left side: (t + -0.7142857145)(t + -0.7142857145) = 1.1224489799 Calculate the square root of the right side: 1.059456927 Break this problem into two subproblems by setting (t + -0.7142857145) equal to 1.059456927 and -1.059456927.Subproblem 1
t + -0.7142857145 = 1.059456927 Simplifying t + -0.7142857145 = 1.059456927 Reorder the terms: -0.7142857145 + t = 1.059456927 Solving -0.7142857145 + t = 1.059456927 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.7142857145' to each side of the equation. -0.7142857145 + 0.7142857145 + t = 1.059456927 + 0.7142857145 Combine like terms: -0.7142857145 + 0.7142857145 = 0.0000000000 0.0000000000 + t = 1.059456927 + 0.7142857145 t = 1.059456927 + 0.7142857145 Combine like terms: 1.059456927 + 0.7142857145 = 1.7737426415 t = 1.7737426415 Simplifying t = 1.7737426415Subproblem 2
t + -0.7142857145 = -1.059456927 Simplifying t + -0.7142857145 = -1.059456927 Reorder the terms: -0.7142857145 + t = -1.059456927 Solving -0.7142857145 + t = -1.059456927 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.7142857145' to each side of the equation. -0.7142857145 + 0.7142857145 + t = -1.059456927 + 0.7142857145 Combine like terms: -0.7142857145 + 0.7142857145 = 0.0000000000 0.0000000000 + t = -1.059456927 + 0.7142857145 t = -1.059456927 + 0.7142857145 Combine like terms: -1.059456927 + 0.7142857145 = -0.3451712125 t = -0.3451712125 Simplifying t = -0.3451712125Solution
The solution to the problem is based on the solutions from the subproblems. t = {1.7737426415, -0.3451712125}
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