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Simplifying x(-2x + -11) = -4 Reorder the terms: x(-11 + -2x) = -4 (-11 * x + -2x * x) = -4 (-11x + -2x2) = -4 Solving -11x + -2x2 = -4 Solving for variable 'x'. Reorder the terms: 4 + -11x + -2x2 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + -11x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -2 + 5.5x + x2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + 5.5x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + 5.5x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 5.5x + x2 = 0 + 2 5.5x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 5.5x + x2 = 2 The x term is 5.5x. Take half its coefficient (2.75). Square it (7.5625) and add it to both sides. Add '7.5625' to each side of the equation. 5.5x + 7.5625 + x2 = 2 + 7.5625 Reorder the terms: 7.5625 + 5.5x + x2 = 2 + 7.5625 Combine like terms: 2 + 7.5625 = 9.5625 7.5625 + 5.5x + x2 = 9.5625 Factor a perfect square on the left side: (x + 2.75)(x + 2.75) = 9.5625 Calculate the square root of the right side: 3.092329219 Break this problem into two subproblems by setting (x + 2.75) equal to 3.092329219 and -3.092329219.Subproblem 1
x + 2.75 = 3.092329219 Simplifying x + 2.75 = 3.092329219 Reorder the terms: 2.75 + x = 3.092329219 Solving 2.75 + x = 3.092329219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = 3.092329219 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 3.092329219 + -2.75 x = 3.092329219 + -2.75 Combine like terms: 3.092329219 + -2.75 = 0.342329219 x = 0.342329219 Simplifying x = 0.342329219Subproblem 2
x + 2.75 = -3.092329219 Simplifying x + 2.75 = -3.092329219 Reorder the terms: 2.75 + x = -3.092329219 Solving 2.75 + x = -3.092329219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = -3.092329219 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -3.092329219 + -2.75 x = -3.092329219 + -2.75 Combine like terms: -3.092329219 + -2.75 = -5.842329219 x = -5.842329219 Simplifying x = -5.842329219Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.342329219, -5.842329219}
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