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Simplifying -2q2 + 7q + 11 = 1 Reorder the terms: 11 + 7q + -2q2 = 1 Solving 11 + 7q + -2q2 = 1 Solving for variable 'q'. Reorder the terms: 11 + -1 + 7q + -2q2 = 1 + -1 Combine like terms: 11 + -1 = 10 10 + 7q + -2q2 = 1 + -1 Combine like terms: 1 + -1 = 0 10 + 7q + -2q2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -5 + -3.5q + q2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -3.5q + 5 + q2 = 0 + 5 Reorder the terms: -5 + 5 + -3.5q + q2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -3.5q + q2 = 0 + 5 -3.5q + q2 = 0 + 5 Combine like terms: 0 + 5 = 5 -3.5q + q2 = 5 The q term is -3.5q. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5q + 3.0625 + q2 = 5 + 3.0625 Reorder the terms: 3.0625 + -3.5q + q2 = 5 + 3.0625 Combine like terms: 5 + 3.0625 = 8.0625 3.0625 + -3.5q + q2 = 8.0625 Factor a perfect square on the left side: (q + -1.75)(q + -1.75) = 8.0625 Calculate the square root of the right side: 2.839454173 Break this problem into two subproblems by setting (q + -1.75) equal to 2.839454173 and -2.839454173.Subproblem 1
q + -1.75 = 2.839454173 Simplifying q + -1.75 = 2.839454173 Reorder the terms: -1.75 + q = 2.839454173 Solving -1.75 + q = 2.839454173 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + q = 2.839454173 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + q = 2.839454173 + 1.75 q = 2.839454173 + 1.75 Combine like terms: 2.839454173 + 1.75 = 4.589454173 q = 4.589454173 Simplifying q = 4.589454173Subproblem 2
q + -1.75 = -2.839454173 Simplifying q + -1.75 = -2.839454173 Reorder the terms: -1.75 + q = -2.839454173 Solving -1.75 + q = -2.839454173 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + q = -2.839454173 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + q = -2.839454173 + 1.75 q = -2.839454173 + 1.75 Combine like terms: -2.839454173 + 1.75 = -1.089454173 q = -1.089454173 Simplifying q = -1.089454173Solution
The solution to the problem is based on the solutions from the subproblems. q = {4.589454173, -1.089454173}
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