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Simplifying (x + 10)(x + 2)(x + 1) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: (10 + x)(x + 2)(x + 1) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: (10 + x)(2 + x)(x + 1) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: (10 + x)(2 + x)(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Multiply (10 + x) * (2 + x) (10(2 + x) + x(2 + x))(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) ((2 * 10 + x * 10) + x(2 + x))(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) ((20 + 10x) + x(2 + x))(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 10x + (2 * x + x * x))(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 10x + (2x + x2))(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 10x + 2x = 12x (20 + 12x + x2)(1 + x) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Multiply (20 + 12x + x2) * (1 + x) (20(1 + x) + 12x * (1 + x) + x2(1 + x)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) ((1 * 20 + x * 20) + 12x * (1 + x) + x2(1 + x)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) ((20 + 20x) + 12x * (1 + x) + x2(1 + x)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 20x + (1 * 12x + x * 12x) + x2(1 + x)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 20x + (12x + 12x2) + x2(1 + x)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 20x + 12x + 12x2 + (1 * x2 + x * x2)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) (20 + 20x + 12x + 12x2 + (1x2 + x3)) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 20x + 12x = 32x (20 + 32x + 12x2 + 1x2 + x3) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 12x2 + 1x2 = 13x2 (20 + 32x + 13x2 + x3) + x(x + 2)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: 20 + 32x + 13x2 + x3 + x(2 + x)(x + 1) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: 20 + 32x + 13x2 + x3 + x(2 + x)(1 + x) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Multiply (2 + x) * (1 + x) 20 + 32x + 13x2 + x3 + x(2(1 + x) + x(1 + x)) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + x((1 * 2 + x * 2) + x(1 + x)) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + x((2 + 2x) + x(1 + x)) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + x(2 + 2x + (1 * x + x * x)) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + x(2 + 2x + (1x + x2)) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 2x + 1x = 3x 20 + 32x + 13x2 + x3 + x(2 + 3x + x2) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + (2 * x + 3x * x + x2 * x) = x(x + 10)(x + 1) + x(x + 10)(x + 2) 20 + 32x + 13x2 + x3 + (2x + 3x2 + x3) = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: 20 + 32x + 2x + 13x2 + 3x2 + x3 + x3 = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 32x + 2x = 34x 20 + 34x + 13x2 + 3x2 + x3 + x3 = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: 13x2 + 3x2 = 16x2 20 + 34x + 16x2 + x3 + x3 = x(x + 10)(x + 1) + x(x + 10)(x + 2) Combine like terms: x3 + x3 = 2x3 20 + 34x + 16x2 + 2x3 = x(x + 10)(x + 1) + x(x + 10)(x + 2) Reorder the terms: 20 + 34x + 16x2 + 2x3 = x(10 + x)(x + 1) + x(x + 10)(x + 2) Reorder the terms: 20 + 34x + 16x2 + 2x3 = x(10 + x)(1 + x) + x(x + 10)(x + 2) Multiply (10 + x) * (1 + x) 20 + 34x + 16x2 + 2x3 = x(10(1 + x) + x(1 + x)) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = x((1 * 10 + x * 10) + x(1 + x)) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = x((10 + 10x) + x(1 + x)) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = x(10 + 10x + (1 * x + x * x)) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = x(10 + 10x + (1x + x2)) + x(x + 10)(x + 2) Combine like terms: 10x + 1x = 11x 20 + 34x + 16x2 + 2x3 = x(10 + 11x + x2) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = (10 * x + 11x * x + x2 * x) + x(x + 10)(x + 2) 20 + 34x + 16x2 + 2x3 = (10x + 11x2 + x3) + x(x + 10)(x + 2) Reorder the terms: 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(10 + x)(x + 2) Reorder the terms: 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(10 + x)(2 + x) Multiply (10 + x) * (2 + x) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(10(2 + x) + x(2 + x)) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x((2 * 10 + x * 10) + x(2 + x)) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x((20 + 10x) + x(2 + x)) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(20 + 10x + (2 * x + x * x)) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(20 + 10x + (2x + x2)) Combine like terms: 10x + 2x = 12x 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + x(20 + 12x + x2) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + (20 * x + 12x * x + x2 * x) 20 + 34x + 16x2 + 2x3 = 10x + 11x2 + x3 + (20x + 12x2 + x3) Reorder the terms: 20 + 34x + 16x2 + 2x3 = 10x + 20x + 11x2 + 12x2 + x3 + x3 Combine like terms: 10x + 20x = 30x 20 + 34x + 16x2 + 2x3 = 30x + 11x2 + 12x2 + x3 + x3 Combine like terms: 11x2 + 12x2 = 23x2 20 + 34x + 16x2 + 2x3 = 30x + 23x2 + x3 + x3 Combine like terms: x3 + x3 = 2x3 20 + 34x + 16x2 + 2x3 = 30x + 23x2 + 2x3 Add '-2x3' to each side of the equation. 20 + 34x + 16x2 + 2x3 + -2x3 = 30x + 23x2 + 2x3 + -2x3 Combine like terms: 2x3 + -2x3 = 0 20 + 34x + 16x2 + 0 = 30x + 23x2 + 2x3 + -2x3 20 + 34x + 16x2 = 30x + 23x2 + 2x3 + -2x3 Combine like terms: 2x3 + -2x3 = 0 20 + 34x + 16x2 = 30x + 23x2 + 0 20 + 34x + 16x2 = 30x + 23x2 Solving 20 + 34x + 16x2 = 30x + 23x2 Solving for variable 'x'. Reorder the terms: 20 + 34x + -30x + 16x2 + -23x2 = 30x + 23x2 + -30x + -23x2 Combine like terms: 34x + -30x = 4x 20 + 4x + 16x2 + -23x2 = 30x + 23x2 + -30x + -23x2 Combine like terms: 16x2 + -23x2 = -7x2 20 + 4x + -7x2 = 30x + 23x2 + -30x + -23x2 Reorder the terms: 20 + 4x + -7x2 = 30x + -30x + 23x2 + -23x2 Combine like terms: 30x + -30x = 0 20 + 4x + -7x2 = 0 + 23x2 + -23x2 20 + 4x + -7x2 = 23x2 + -23x2 Combine like terms: 23x2 + -23x2 = 0 20 + 4x + -7x2 = 0 Factor a trinomial. (2 + -1x)(10 + 7x) = 0Subproblem 1
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Subproblem 2
Set the factor '(10 + 7x)' equal to zero and attempt to solve: Simplifying 10 + 7x = 0 Solving 10 + 7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + 7x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + 7x = 0 + -10 7x = 0 + -10 Combine like terms: 0 + -10 = -10 7x = -10 Divide each side by '7'. x = -1.428571429 Simplifying x = -1.428571429Solution
x = {2, -1.428571429}
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