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Simplifying 9t(t + 2) + -3t(6t + 1) = 1 Reorder the terms: 9t(2 + t) + -3t(6t + 1) = 1 (2 * 9t + t * 9t) + -3t(6t + 1) = 1 (18t + 9t2) + -3t(6t + 1) = 1 Reorder the terms: 18t + 9t2 + -3t(1 + 6t) = 1 18t + 9t2 + (1 * -3t + 6t * -3t) = 1 18t + 9t2 + (-3t + -18t2) = 1 Reorder the terms: 18t + -3t + 9t2 + -18t2 = 1 Combine like terms: 18t + -3t = 15t 15t + 9t2 + -18t2 = 1 Combine like terms: 9t2 + -18t2 = -9t2 15t + -9t2 = 1 Solving 15t + -9t2 = 1 Solving for variable 't'. Reorder the terms: -1 + 15t + -9t2 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + 15t + -9t2 = 0 Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. 0.1111111111 + -1.666666667t + t2 = 0 Move the constant term to the right: Add '-0.1111111111' to each side of the equation. 0.1111111111 + -1.666666667t + -0.1111111111 + t2 = 0 + -0.1111111111 Reorder the terms: 0.1111111111 + -0.1111111111 + -1.666666667t + t2 = 0 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + -1.666666667t + t2 = 0 + -0.1111111111 -1.666666667t + t2 = 0 + -0.1111111111 Combine like terms: 0 + -0.1111111111 = -0.1111111111 -1.666666667t + t2 = -0.1111111111 The t term is -1.666666667t. Take half its coefficient (-0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. -1.666666667t + 0.6944444447 + t2 = -0.1111111111 + 0.6944444447 Reorder the terms: 0.6944444447 + -1.666666667t + t2 = -0.1111111111 + 0.6944444447 Combine like terms: -0.1111111111 + 0.6944444447 = 0.5833333336 0.6944444447 + -1.666666667t + t2 = 0.5833333336 Factor a perfect square on the left side: (t + -0.8333333335)(t + -0.8333333335) = 0.5833333336 Calculate the square root of the right side: 0.763762616 Break this problem into two subproblems by setting (t + -0.8333333335) equal to 0.763762616 and -0.763762616.Subproblem 1
t + -0.8333333335 = 0.763762616 Simplifying t + -0.8333333335 = 0.763762616 Reorder the terms: -0.8333333335 + t = 0.763762616 Solving -0.8333333335 + t = 0.763762616 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + t = 0.763762616 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + t = 0.763762616 + 0.8333333335 t = 0.763762616 + 0.8333333335 Combine like terms: 0.763762616 + 0.8333333335 = 1.5970959495 t = 1.5970959495 Simplifying t = 1.5970959495Subproblem 2
t + -0.8333333335 = -0.763762616 Simplifying t + -0.8333333335 = -0.763762616 Reorder the terms: -0.8333333335 + t = -0.763762616 Solving -0.8333333335 + t = -0.763762616 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + t = -0.763762616 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + t = -0.763762616 + 0.8333333335 t = -0.763762616 + 0.8333333335 Combine like terms: -0.763762616 + 0.8333333335 = 0.0695707175 t = 0.0695707175 Simplifying t = 0.0695707175Solution
The solution to the problem is based on the solutions from the subproblems. t = {1.5970959495, 0.0695707175}
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