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Simplifying -4.9t2 + 10t + 45 = 0 Reorder the terms: 45 + 10t + -4.9t2 = 0 Solving 45 + 10t + -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'. -9.183673469 + -2.040816327t + t2 = 0 Move the constant term to the right: Add '9.183673469' to each side of the equation. -9.183673469 + -2.040816327t + 9.183673469 + t2 = 0 + 9.183673469 Reorder the terms: -9.183673469 + 9.183673469 + -2.040816327t + t2 = 0 + 9.183673469 Combine like terms: -9.183673469 + 9.183673469 = 0.000000000 0.000000000 + -2.040816327t + t2 = 0 + 9.183673469 -2.040816327t + t2 = 0 + 9.183673469 Combine like terms: 0 + 9.183673469 = 9.183673469 -2.040816327t + t2 = 9.183673469 The t term is -2.040816327t. Take half its coefficient (-1.020408164). Square it (1.041232821) and add it to both sides. Add '1.041232821' to each side of the equation. -2.040816327t + 1.041232821 + t2 = 9.183673469 + 1.041232821 Reorder the terms: 1.041232821 + -2.040816327t + t2 = 9.183673469 + 1.041232821 Combine like terms: 9.183673469 + 1.041232821 = 10.22490629 1.041232821 + -2.040816327t + t2 = 10.22490629 Factor a perfect square on the left side: (t + -1.020408164)(t + -1.020408164) = 10.22490629 Calculate the square root of the right side: 3.197640738 Break this problem into two subproblems by setting (t + -1.020408164) equal to 3.197640738 and -3.197640738.Subproblem 1
t + -1.020408164 = 3.197640738 Simplifying t + -1.020408164 = 3.197640738 Reorder the terms: -1.020408164 + t = 3.197640738 Solving -1.020408164 + t = 3.197640738 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = 3.197640738 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = 3.197640738 + 1.020408164 t = 3.197640738 + 1.020408164 Combine like terms: 3.197640738 + 1.020408164 = 4.218048902 t = 4.218048902 Simplifying t = 4.218048902Subproblem 2
t + -1.020408164 = -3.197640738 Simplifying t + -1.020408164 = -3.197640738 Reorder the terms: -1.020408164 + t = -3.197640738 Solving -1.020408164 + t = -3.197640738 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = -3.197640738 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = -3.197640738 + 1.020408164 t = -3.197640738 + 1.020408164 Combine like terms: -3.197640738 + 1.020408164 = -2.177232574 t = -2.177232574 Simplifying t = -2.177232574Solution
The solution to the problem is based on the solutions from the subproblems. t = {4.218048902, -2.177232574}
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