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Simplifying -4.9t2 + 9.8t + 3 = 0 Reorder the terms: 3 + 9.8t + -4.9t2 = 0 Solving 3 + 9.8t + -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 + -2t + t2 = 0 Move the constant term to the right: Add '0.612244898' to each side of the equation. -0.612244898 + -2t + 0.612244898 + t2 = 0 + 0.612244898 Reorder the terms: -0.612244898 + 0.612244898 + -2t + t2 = 0 + 0.612244898 Combine like terms: -0.612244898 + 0.612244898 = 0.000000000 0.000000000 + -2t + t2 = 0 + 0.612244898 -2t + t2 = 0 + 0.612244898 Combine like terms: 0 + 0.612244898 = 0.612244898 -2t + t2 = 0.612244898 The t term is -2t. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2t + 1 + t2 = 0.612244898 + 1 Reorder the terms: 1 + -2t + t2 = 0.612244898 + 1 Combine like terms: 0.612244898 + 1 = 1.612244898 1 + -2t + t2 = 1.612244898 Factor a perfect square on the left side: (t + -1)(t + -1) = 1.612244898 Calculate the square root of the right side: 1.26974206 Break this problem into two subproblems by setting (t + -1) equal to 1.26974206 and -1.26974206.Subproblem 1
t + -1 = 1.26974206 Simplifying t + -1 = 1.26974206 Reorder the terms: -1 + t = 1.26974206 Solving -1 + t = 1.26974206 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = 1.26974206 + 1 Combine like terms: -1 + 1 = 0 0 + t = 1.26974206 + 1 t = 1.26974206 + 1 Combine like terms: 1.26974206 + 1 = 2.26974206 t = 2.26974206 Simplifying t = 2.26974206Subproblem 2
t + -1 = -1.26974206 Simplifying t + -1 = -1.26974206 Reorder the terms: -1 + t = -1.26974206 Solving -1 + t = -1.26974206 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = -1.26974206 + 1 Combine like terms: -1 + 1 = 0 0 + t = -1.26974206 + 1 t = -1.26974206 + 1 Combine like terms: -1.26974206 + 1 = -0.26974206 t = -0.26974206 Simplifying t = -0.26974206Solution
The solution to the problem is based on the solutions from the subproblems. t = {2.26974206, -0.26974206}
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