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Simplifying 0 = t3 + -7t + -4t2 Reorder the terms: 0 = -7t + -4t2 + t3 Solving 0 = -7t + -4t2 + t3 Solving for variable 't'. Remove the zero: 7t + 4t2 + -1t3 = -7t + -4t2 + t3 + 7t + 4t2 + -1t3 Reorder the terms: 7t + 4t2 + -1t3 = -7t + 7t + -4t2 + 4t2 + t3 + -1t3 Combine like terms: -7t + 7t = 0 7t + 4t2 + -1t3 = 0 + -4t2 + 4t2 + t3 + -1t3 7t + 4t2 + -1t3 = -4t2 + 4t2 + t3 + -1t3 Combine like terms: -4t2 + 4t2 = 0 7t + 4t2 + -1t3 = 0 + t3 + -1t3 7t + 4t2 + -1t3 = t3 + -1t3 Combine like terms: t3 + -1t3 = 0 7t + 4t2 + -1t3 = 0 Factor out the Greatest Common Factor (GCF), 't'. t(7 + 4t + -1t2) = 0Subproblem 1
Set the factor 't' equal to zero and attempt to solve: Simplifying t = 0 Solving t = 0 Move all terms containing t to the left, all other terms to the right. Simplifying t = 0Subproblem 2
Set the factor '(7 + 4t + -1t2)' equal to zero and attempt to solve: Simplifying 7 + 4t + -1t2 = 0 Solving 7 + 4t + -1t2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -7 + -4t + t2 = 0 Move the constant term to the right: Add '7' to each side of the equation. -7 + -4t + 7 + t2 = 0 + 7 Reorder the terms: -7 + 7 + -4t + t2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -4t + t2 = 0 + 7 -4t + t2 = 0 + 7 Combine like terms: 0 + 7 = 7 -4t + t2 = 7 The t term is -4t. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4t + 4 + t2 = 7 + 4 Reorder the terms: 4 + -4t + t2 = 7 + 4 Combine like terms: 7 + 4 = 11 4 + -4t + t2 = 11 Factor a perfect square on the left side: (t + -2)(t + -2) = 11 Calculate the square root of the right side: 3.31662479 Break this problem into two subproblems by setting (t + -2) equal to 3.31662479 and -3.31662479.Subproblem 1
t + -2 = 3.31662479 Simplifying t + -2 = 3.31662479 Reorder the terms: -2 + t = 3.31662479 Solving -2 + t = 3.31662479 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = 3.31662479 + 2 Combine like terms: -2 + 2 = 0 0 + t = 3.31662479 + 2 t = 3.31662479 + 2 Combine like terms: 3.31662479 + 2 = 5.31662479 t = 5.31662479 Simplifying t = 5.31662479Subproblem 2
t + -2 = -3.31662479 Simplifying t + -2 = -3.31662479 Reorder the terms: -2 + t = -3.31662479 Solving -2 + t = -3.31662479 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = -3.31662479 + 2 Combine like terms: -2 + 2 = 0 0 + t = -3.31662479 + 2 t = -3.31662479 + 2 Combine like terms: -3.31662479 + 2 = -1.31662479 t = -1.31662479 Simplifying t = -1.31662479Solution
The solution to the problem is based on the solutions from the subproblems. t = {5.31662479, -1.31662479}Solution
t = {0, 5.31662479, -1.31662479}
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