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Simplifying (4x + 2)(x + -2) = 9 Reorder the terms: (2 + 4x)(x + -2) = 9 Reorder the terms: (2 + 4x)(-2 + x) = 9 Multiply (2 + 4x) * (-2 + x) (2(-2 + x) + 4x * (-2 + x)) = 9 ((-2 * 2 + x * 2) + 4x * (-2 + x)) = 9 ((-4 + 2x) + 4x * (-2 + x)) = 9 (-4 + 2x + (-2 * 4x + x * 4x)) = 9 (-4 + 2x + (-8x + 4x2)) = 9 Combine like terms: 2x + -8x = -6x (-4 + -6x + 4x2) = 9 Solving -4 + -6x + 4x2 = 9 Solving for variable 'x'. Reorder the terms: -4 + -9 + -6x + 4x2 = 9 + -9 Combine like terms: -4 + -9 = -13 -13 + -6x + 4x2 = 9 + -9 Combine like terms: 9 + -9 = 0 -13 + -6x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -3.25 + -1.5x + x2 = 0 Move the constant term to the right: Add '3.25' to each side of the equation. -3.25 + -1.5x + 3.25 + x2 = 0 + 3.25 Reorder the terms: -3.25 + 3.25 + -1.5x + x2 = 0 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + -1.5x + x2 = 0 + 3.25 -1.5x + x2 = 0 + 3.25 Combine like terms: 0 + 3.25 = 3.25 -1.5x + x2 = 3.25 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = 3.25 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = 3.25 + 0.5625 Combine like terms: 3.25 + 0.5625 = 3.8125 0.5625 + -1.5x + x2 = 3.8125 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = 3.8125 Calculate the square root of the right side: 1.952562419 Break this problem into two subproblems by setting (x + -0.75) equal to 1.952562419 and -1.952562419.Subproblem 1
x + -0.75 = 1.952562419 Simplifying x + -0.75 = 1.952562419 Reorder the terms: -0.75 + x = 1.952562419 Solving -0.75 + x = 1.952562419 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 1.952562419 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 1.952562419 + 0.75 x = 1.952562419 + 0.75 Combine like terms: 1.952562419 + 0.75 = 2.702562419 x = 2.702562419 Simplifying x = 2.702562419Subproblem 2
x + -0.75 = -1.952562419 Simplifying x + -0.75 = -1.952562419 Reorder the terms: -0.75 + x = -1.952562419 Solving -0.75 + x = -1.952562419 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -1.952562419 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -1.952562419 + 0.75 x = -1.952562419 + 0.75 Combine like terms: -1.952562419 + 0.75 = -1.202562419 x = -1.202562419 Simplifying x = -1.202562419Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.702562419, -1.202562419}
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