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Simplifying (2x + -1)(2x + -4) = (x + 2) Reorder the terms: (-1 + 2x)(2x + -4) = (x + 2) Reorder the terms: (-1 + 2x)(-4 + 2x) = (x + 2) Multiply (-1 + 2x) * (-4 + 2x) (-1(-4 + 2x) + 2x * (-4 + 2x)) = (x + 2) ((-4 * -1 + 2x * -1) + 2x * (-4 + 2x)) = (x + 2) ((4 + -2x) + 2x * (-4 + 2x)) = (x + 2) (4 + -2x + (-4 * 2x + 2x * 2x)) = (x + 2) (4 + -2x + (-8x + 4x2)) = (x + 2) Combine like terms: -2x + -8x = -10x (4 + -10x + 4x2) = (x + 2) Reorder the terms: 4 + -10x + 4x2 = (2 + x) Remove parenthesis around (2 + x) 4 + -10x + 4x2 = 2 + x Solving 4 + -10x + 4x2 = 2 + x Solving for variable 'x'. Reorder the terms: 4 + -2 + -10x + -1x + 4x2 = 2 + x + -2 + -1x Combine like terms: 4 + -2 = 2 2 + -10x + -1x + 4x2 = 2 + x + -2 + -1x Combine like terms: -10x + -1x = -11x 2 + -11x + 4x2 = 2 + x + -2 + -1x Reorder the terms: 2 + -11x + 4x2 = 2 + -2 + x + -1x Combine like terms: 2 + -2 = 0 2 + -11x + 4x2 = 0 + x + -1x 2 + -11x + 4x2 = x + -1x Combine like terms: x + -1x = 0 2 + -11x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 0.5 + -2.75x + x2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + -2.75x + -0.5 + x2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + -2.75x + x2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + -2.75x + x2 = 0 + -0.5 -2.75x + x2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 -2.75x + x2 = -0.5 The x term is -2.75x. Take half its coefficient (-1.375). Square it (1.890625) and add it to both sides. Add '1.890625' to each side of the equation. -2.75x + 1.890625 + x2 = -0.5 + 1.890625 Reorder the terms: 1.890625 + -2.75x + x2 = -0.5 + 1.890625 Combine like terms: -0.5 + 1.890625 = 1.390625 1.890625 + -2.75x + x2 = 1.390625 Factor a perfect square on the left side: (x + -1.375)(x + -1.375) = 1.390625 Calculate the square root of the right side: 1.179247642 Break this problem into two subproblems by setting (x + -1.375) equal to 1.179247642 and -1.179247642.Subproblem 1
x + -1.375 = 1.179247642 Simplifying x + -1.375 = 1.179247642 Reorder the terms: -1.375 + x = 1.179247642 Solving -1.375 + x = 1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 1.179247642 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 1.179247642 + 1.375 x = 1.179247642 + 1.375 Combine like terms: 1.179247642 + 1.375 = 2.554247642 x = 2.554247642 Simplifying x = 2.554247642Subproblem 2
x + -1.375 = -1.179247642 Simplifying x + -1.375 = -1.179247642 Reorder the terms: -1.375 + x = -1.179247642 Solving -1.375 + x = -1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -1.179247642 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -1.179247642 + 1.375 x = -1.179247642 + 1.375 Combine like terms: -1.179247642 + 1.375 = 0.195752358 x = 0.195752358 Simplifying x = 0.195752358Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.554247642, 0.195752358}
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