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Simplifying t2 + -6t + -15 = 0 Reorder the terms: -15 + -6t + t2 = 0 Solving -15 + -6t + t2 = 0 Solving for variable 't'. Begin completing the square. Move the constant term to the right: Add '15' to each side of the equation. -15 + -6t + 15 + t2 = 0 + 15 Reorder the terms: -15 + 15 + -6t + t2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -6t + t2 = 0 + 15 -6t + t2 = 0 + 15 Combine like terms: 0 + 15 = 15 -6t + t2 = 15 The t term is -6t. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6t + 9 + t2 = 15 + 9 Reorder the terms: 9 + -6t + t2 = 15 + 9 Combine like terms: 15 + 9 = 24 9 + -6t + t2 = 24 Factor a perfect square on the left side: (t + -3)(t + -3) = 24 Calculate the square root of the right side: 4.898979486 Break this problem into two subproblems by setting (t + -3) equal to 4.898979486 and -4.898979486.Subproblem 1
t + -3 = 4.898979486 Simplifying t + -3 = 4.898979486 Reorder the terms: -3 + t = 4.898979486 Solving -3 + t = 4.898979486 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = 4.898979486 + 3 Combine like terms: -3 + 3 = 0 0 + t = 4.898979486 + 3 t = 4.898979486 + 3 Combine like terms: 4.898979486 + 3 = 7.898979486 t = 7.898979486 Simplifying t = 7.898979486Subproblem 2
t + -3 = -4.898979486 Simplifying t + -3 = -4.898979486 Reorder the terms: -3 + t = -4.898979486 Solving -3 + t = -4.898979486 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = -4.898979486 + 3 Combine like terms: -3 + 3 = 0 0 + t = -4.898979486 + 3 t = -4.898979486 + 3 Combine like terms: -4.898979486 + 3 = -1.898979486 t = -1.898979486 Simplifying t = -1.898979486Solution
The solution to the problem is based on the solutions from the subproblems. t = {7.898979486, -1.898979486}
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