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Simplifying 0 = -4.9t2 + -14t + 2 Reorder the terms: 0 = 2 + -14t + -4.9t2 Solving 0 = 2 + -14t + -4.9t2 Solving for variable 't'. Combine like terms: 0 + -2 = -2 -2 + 14t + 4.9t2 = 2 + -14t + -4.9t2 + -2 + 14t + 4.9t2 Reorder the terms: -2 + 14t + 4.9t2 = 2 + -2 + -14t + 14t + -4.9t2 + 4.9t2 Combine like terms: 2 + -2 = 0 -2 + 14t + 4.9t2 = 0 + -14t + 14t + -4.9t2 + 4.9t2 -2 + 14t + 4.9t2 = -14t + 14t + -4.9t2 + 4.9t2 Combine like terms: -14t + 14t = 0 -2 + 14t + 4.9t2 = 0 + -4.9t2 + 4.9t2 -2 + 14t + 4.9t2 = -4.9t2 + 4.9t2 Combine like terms: -4.9t2 + 4.9t2 = 0.0 -2 + 14t + 4.9t2 = 0.0 Begin completing the square. Divide all terms by 4.9 the coefficient of the squared term: Divide each side by '4.9'. -0.4081632653 + 2.857142857t + t2 = 0 Move the constant term to the right: Add '0.4081632653' to each side of the equation. -0.4081632653 + 2.857142857t + 0.4081632653 + t2 = 0 + 0.4081632653 Reorder the terms: -0.4081632653 + 0.4081632653 + 2.857142857t + t2 = 0 + 0.4081632653 Combine like terms: -0.4081632653 + 0.4081632653 = 0.0000000000 0.0000000000 + 2.857142857t + t2 = 0 + 0.4081632653 2.857142857t + t2 = 0 + 0.4081632653 Combine like terms: 0 + 0.4081632653 = 0.4081632653 2.857142857t + t2 = 0.4081632653 The t term is 2.857142857t. Take half its coefficient (1.428571429). Square it (2.040816328) and add it to both sides. Add '2.040816328' to each side of the equation. 2.857142857t + 2.040816328 + t2 = 0.4081632653 + 2.040816328 Reorder the terms: 2.040816328 + 2.857142857t + t2 = 0.4081632653 + 2.040816328 Combine like terms: 0.4081632653 + 2.040816328 = 2.4489795933 2.040816328 + 2.857142857t + t2 = 2.4489795933 Factor a perfect square on the left side: (t + 1.428571429)(t + 1.428571429) = 2.4489795933 Calculate the square root of the right side: 1.564921593 Break this problem into two subproblems by setting (t + 1.428571429) equal to 1.564921593 and -1.564921593.Subproblem 1
t + 1.428571429 = 1.564921593 Simplifying t + 1.428571429 = 1.564921593 Reorder the terms: 1.428571429 + t = 1.564921593 Solving 1.428571429 + t = 1.564921593 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.428571429' to each side of the equation. 1.428571429 + -1.428571429 + t = 1.564921593 + -1.428571429 Combine like terms: 1.428571429 + -1.428571429 = 0.000000000 0.000000000 + t = 1.564921593 + -1.428571429 t = 1.564921593 + -1.428571429 Combine like terms: 1.564921593 + -1.428571429 = 0.136350164 t = 0.136350164 Simplifying t = 0.136350164Subproblem 2
t + 1.428571429 = -1.564921593 Simplifying t + 1.428571429 = -1.564921593 Reorder the terms: 1.428571429 + t = -1.564921593 Solving 1.428571429 + t = -1.564921593 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.428571429' to each side of the equation. 1.428571429 + -1.428571429 + t = -1.564921593 + -1.428571429 Combine like terms: 1.428571429 + -1.428571429 = 0.000000000 0.000000000 + t = -1.564921593 + -1.428571429 t = -1.564921593 + -1.428571429 Combine like terms: -1.564921593 + -1.428571429 = -2.993493022 t = -2.993493022 Simplifying t = -2.993493022Solution
The solution to the problem is based on the solutions from the subproblems. t = {0.136350164, -2.993493022}
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