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Simplifying 0 = -16t2 + 128t + 30 Reorder the terms: 0 = 30 + 128t + -16t2 Solving 0 = 30 + 128t + -16t2 Solving for variable 't'. Combine like terms: 0 + -30 = -30 -30 + -128t + 16t2 = 30 + 128t + -16t2 + -30 + -128t + 16t2 Reorder the terms: -30 + -128t + 16t2 = 30 + -30 + 128t + -128t + -16t2 + 16t2 Combine like terms: 30 + -30 = 0 -30 + -128t + 16t2 = 0 + 128t + -128t + -16t2 + 16t2 -30 + -128t + 16t2 = 128t + -128t + -16t2 + 16t2 Combine like terms: 128t + -128t = 0 -30 + -128t + 16t2 = 0 + -16t2 + 16t2 -30 + -128t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 -30 + -128t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-15 + -64t + 8t2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-15 + -64t + 8t2)' equal to zero and attempt to solve: Simplifying -15 + -64t + 8t2 = 0 Solving -15 + -64t + 8t2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -1.875 + -8t + t2 = 0 Move the constant term to the right: Add '1.875' to each side of the equation. -1.875 + -8t + 1.875 + t2 = 0 + 1.875 Reorder the terms: -1.875 + 1.875 + -8t + t2 = 0 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + -8t + t2 = 0 + 1.875 -8t + t2 = 0 + 1.875 Combine like terms: 0 + 1.875 = 1.875 -8t + t2 = 1.875 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 = 1.875 + 16 Reorder the terms: 16 + -8t + t2 = 1.875 + 16 Combine like terms: 1.875 + 16 = 17.875 16 + -8t + t2 = 17.875 Factor a perfect square on the left side: (t + -4)(t + -4) = 17.875 Calculate the square root of the right side: 4.227883631 Break this problem into two subproblems by setting (t + -4) equal to 4.227883631 and -4.227883631.Subproblem 1
t + -4 = 4.227883631 Simplifying t + -4 = 4.227883631 Reorder the terms: -4 + t = 4.227883631 Solving -4 + t = 4.227883631 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 = 4.227883631 + 4 Combine like terms: -4 + 4 = 0 0 + t = 4.227883631 + 4 t = 4.227883631 + 4 Combine like terms: 4.227883631 + 4 = 8.227883631 t = 8.227883631 Simplifying t = 8.227883631Subproblem 2
t + -4 = -4.227883631 Simplifying t + -4 = -4.227883631 Reorder the terms: -4 + t = -4.227883631 Solving -4 + t = -4.227883631 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 = -4.227883631 + 4 Combine like terms: -4 + 4 = 0 0 + t = -4.227883631 + 4 t = -4.227883631 + 4 Combine like terms: -4.227883631 + 4 = -0.227883631 t = -0.227883631 Simplifying t = -0.227883631Solution
The solution to the problem is based on the solutions from the subproblems. t = {8.227883631, -0.227883631}Solution
t = {8.227883631, -0.227883631}
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