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Simplifying 0 = -16t2 + 128t + 190 Reorder the terms: 0 = 190 + 128t + -16t2 Solving 0 = 190 + 128t + -16t2 Solving for variable 't'. Combine like terms: 0 + -190 = -190 -190 + -128t + 16t2 = 190 + 128t + -16t2 + -190 + -128t + 16t2 Reorder the terms: -190 + -128t + 16t2 = 190 + -190 + 128t + -128t + -16t2 + 16t2 Combine like terms: 190 + -190 = 0 -190 + -128t + 16t2 = 0 + 128t + -128t + -16t2 + 16t2 -190 + -128t + 16t2 = 128t + -128t + -16t2 + 16t2 Combine like terms: 128t + -128t = 0 -190 + -128t + 16t2 = 0 + -16t2 + 16t2 -190 + -128t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 -190 + -128t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-95 + -64t + 8t2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-95 + -64t + 8t2)' equal to zero and attempt to solve: Simplifying -95 + -64t + 8t2 = 0 Solving -95 + -64t + 8t2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -11.875 + -8t + t2 = 0 Move the constant term to the right: Add '11.875' to each side of the equation. -11.875 + -8t + 11.875 + t2 = 0 + 11.875 Reorder the terms: -11.875 + 11.875 + -8t + t2 = 0 + 11.875 Combine like terms: -11.875 + 11.875 = 0.000 0.000 + -8t + t2 = 0 + 11.875 -8t + t2 = 0 + 11.875 Combine like terms: 0 + 11.875 = 11.875 -8t + t2 = 11.875 The t term is -8t. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8t + 16 + t2 = 11.875 + 16 Reorder the terms: 16 + -8t + t2 = 11.875 + 16 Combine like terms: 11.875 + 16 = 27.875 16 + -8t + t2 = 27.875 Factor a perfect square on the left side: (t + -4)(t + -4) = 27.875 Calculate the square root of the right side: 5.27967802 Break this problem into two subproblems by setting (t + -4) equal to 5.27967802 and -5.27967802.Subproblem 1
t + -4 = 5.27967802 Simplifying t + -4 = 5.27967802 Reorder the terms: -4 + t = 5.27967802 Solving -4 + t = 5.27967802 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = 5.27967802 + 4 Combine like terms: -4 + 4 = 0 0 + t = 5.27967802 + 4 t = 5.27967802 + 4 Combine like terms: 5.27967802 + 4 = 9.27967802 t = 9.27967802 Simplifying t = 9.27967802Subproblem 2
t + -4 = -5.27967802 Simplifying t + -4 = -5.27967802 Reorder the terms: -4 + t = -5.27967802 Solving -4 + t = -5.27967802 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = -5.27967802 + 4 Combine like terms: -4 + 4 = 0 0 + t = -5.27967802 + 4 t = -5.27967802 + 4 Combine like terms: -5.27967802 + 4 = -1.27967802 t = -1.27967802 Simplifying t = -1.27967802Solution
The solution to the problem is based on the solutions from the subproblems. t = {9.27967802, -1.27967802}Solution
t = {9.27967802, -1.27967802}
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