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Simplifying -4.9t2 + 24.5t + 25 = 0 Reorder the terms: 25 + 24.5t + -4.9t2 = 0 Solving 25 + 24.5t + -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'. -5.102040816 + -5t + t2 = 0 Move the constant term to the right: Add '5.102040816' to each side of the equation. -5.102040816 + -5t + 5.102040816 + t2 = 0 + 5.102040816 Reorder the terms: -5.102040816 + 5.102040816 + -5t + t2 = 0 + 5.102040816 Combine like terms: -5.102040816 + 5.102040816 = 0.000000000 0.000000000 + -5t + t2 = 0 + 5.102040816 -5t + t2 = 0 + 5.102040816 Combine like terms: 0 + 5.102040816 = 5.102040816 -5t + t2 = 5.102040816 The t term is -5t. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5t + 6.25 + t2 = 5.102040816 + 6.25 Reorder the terms: 6.25 + -5t + t2 = 5.102040816 + 6.25 Combine like terms: 5.102040816 + 6.25 = 11.352040816 6.25 + -5t + t2 = 11.352040816 Factor a perfect square on the left side: (t + -2.5)(t + -2.5) = 11.352040816 Calculate the square root of the right side: 3.369278976 Break this problem into two subproblems by setting (t + -2.5) equal to 3.369278976 and -3.369278976.Subproblem 1
t + -2.5 = 3.369278976 Simplifying t + -2.5 = 3.369278976 Reorder the terms: -2.5 + t = 3.369278976 Solving -2.5 + t = 3.369278976 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + t = 3.369278976 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + t = 3.369278976 + 2.5 t = 3.369278976 + 2.5 Combine like terms: 3.369278976 + 2.5 = 5.869278976 t = 5.869278976 Simplifying t = 5.869278976Subproblem 2
t + -2.5 = -3.369278976 Simplifying t + -2.5 = -3.369278976 Reorder the terms: -2.5 + t = -3.369278976 Solving -2.5 + t = -3.369278976 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + t = -3.369278976 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + t = -3.369278976 + 2.5 t = -3.369278976 + 2.5 Combine like terms: -3.369278976 + 2.5 = -0.869278976 t = -0.869278976 Simplifying t = -0.869278976Solution
The solution to the problem is based on the solutions from the subproblems. t = {5.869278976, -0.869278976}
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