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Simplifying (3x + -7)(4x + -3) + -1(2x + -1)(3x + -4) = 0 Reorder the terms: (-7 + 3x)(4x + -3) + -1(2x + -1)(3x + -4) = 0 Reorder the terms: (-7 + 3x)(-3 + 4x) + -1(2x + -1)(3x + -4) = 0 Multiply (-7 + 3x) * (-3 + 4x) (-7(-3 + 4x) + 3x * (-3 + 4x)) + -1(2x + -1)(3x + -4) = 0 ((-3 * -7 + 4x * -7) + 3x * (-3 + 4x)) + -1(2x + -1)(3x + -4) = 0 ((21 + -28x) + 3x * (-3 + 4x)) + -1(2x + -1)(3x + -4) = 0 (21 + -28x + (-3 * 3x + 4x * 3x)) + -1(2x + -1)(3x + -4) = 0 (21 + -28x + (-9x + 12x2)) + -1(2x + -1)(3x + -4) = 0 Combine like terms: -28x + -9x = -37x (21 + -37x + 12x2) + -1(2x + -1)(3x + -4) = 0 Reorder the terms: 21 + -37x + 12x2 + -1(-1 + 2x)(3x + -4) = 0 Reorder the terms: 21 + -37x + 12x2 + -1(-1 + 2x)(-4 + 3x) = 0 Multiply (-1 + 2x) * (-4 + 3x) 21 + -37x + 12x2 + -1(-1(-4 + 3x) + 2x * (-4 + 3x)) = 0 21 + -37x + 12x2 + -1((-4 * -1 + 3x * -1) + 2x * (-4 + 3x)) = 0 21 + -37x + 12x2 + -1((4 + -3x) + 2x * (-4 + 3x)) = 0 21 + -37x + 12x2 + -1(4 + -3x + (-4 * 2x + 3x * 2x)) = 0 21 + -37x + 12x2 + -1(4 + -3x + (-8x + 6x2)) = 0 Combine like terms: -3x + -8x = -11x 21 + -37x + 12x2 + -1(4 + -11x + 6x2) = 0 21 + -37x + 12x2 + (4 * -1 + -11x * -1 + 6x2 * -1) = 0 21 + -37x + 12x2 + (-4 + 11x + -6x2) = 0 Reorder the terms: 21 + -4 + -37x + 11x + 12x2 + -6x2 = 0 Combine like terms: 21 + -4 = 17 17 + -37x + 11x + 12x2 + -6x2 = 0 Combine like terms: -37x + 11x = -26x 17 + -26x + 12x2 + -6x2 = 0 Combine like terms: 12x2 + -6x2 = 6x2 17 + -26x + 6x2 = 0 Solving 17 + -26x + 6x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. 2.833333333 + -4.333333333x + x2 = 0 Move the constant term to the right: Add '-2.833333333' to each side of the equation. 2.833333333 + -4.333333333x + -2.833333333 + x2 = 0 + -2.833333333 Reorder the terms: 2.833333333 + -2.833333333 + -4.333333333x + x2 = 0 + -2.833333333 Combine like terms: 2.833333333 + -2.833333333 = 0.000000000 0.000000000 + -4.333333333x + x2 = 0 + -2.833333333 -4.333333333x + x2 = 0 + -2.833333333 Combine like terms: 0 + -2.833333333 = -2.833333333 -4.333333333x + x2 = -2.833333333 The x term is -4.333333333x. Take half its coefficient (-2.166666667). Square it (4.694444446) and add it to both sides. Add '4.694444446' to each side of the equation. -4.333333333x + 4.694444446 + x2 = -2.833333333 + 4.694444446 Reorder the terms: 4.694444446 + -4.333333333x + x2 = -2.833333333 + 4.694444446 Combine like terms: -2.833333333 + 4.694444446 = 1.861111113 4.694444446 + -4.333333333x + x2 = 1.861111113 Factor a perfect square on the left side: (x + -2.166666667)(x + -2.166666667) = 1.861111113 Calculate the square root of the right side: 1.364225463 Break this problem into two subproblems by setting (x + -2.166666667) equal to 1.364225463 and -1.364225463.Subproblem 1
x + -2.166666667 = 1.364225463 Simplifying x + -2.166666667 = 1.364225463 Reorder the terms: -2.166666667 + x = 1.364225463 Solving -2.166666667 + x = 1.364225463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.166666667' to each side of the equation. -2.166666667 + 2.166666667 + x = 1.364225463 + 2.166666667 Combine like terms: -2.166666667 + 2.166666667 = 0.000000000 0.000000000 + x = 1.364225463 + 2.166666667 x = 1.364225463 + 2.166666667 Combine like terms: 1.364225463 + 2.166666667 = 3.53089213 x = 3.53089213 Simplifying x = 3.53089213Subproblem 2
x + -2.166666667 = -1.364225463 Simplifying x + -2.166666667 = -1.364225463 Reorder the terms: -2.166666667 + x = -1.364225463 Solving -2.166666667 + x = -1.364225463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.166666667' to each side of the equation. -2.166666667 + 2.166666667 + x = -1.364225463 + 2.166666667 Combine like terms: -2.166666667 + 2.166666667 = 0.000000000 0.000000000 + x = -1.364225463 + 2.166666667 x = -1.364225463 + 2.166666667 Combine like terms: -1.364225463 + 2.166666667 = 0.802441204 x = 0.802441204 Simplifying x = 0.802441204Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.53089213, 0.802441204}
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