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Simplifying 4(x + 2)(-3x + 5) = 2x + -7 Reorder the terms: 4(2 + x)(-3x + 5) = 2x + -7 Reorder the terms: 4(2 + x)(5 + -3x) = 2x + -7 Multiply (2 + x) * (5 + -3x) 4(2(5 + -3x) + x(5 + -3x)) = 2x + -7 4((5 * 2 + -3x * 2) + x(5 + -3x)) = 2x + -7 4((10 + -6x) + x(5 + -3x)) = 2x + -7 4(10 + -6x + (5 * x + -3x * x)) = 2x + -7 4(10 + -6x + (5x + -3x2)) = 2x + -7 Combine like terms: -6x + 5x = -1x 4(10 + -1x + -3x2) = 2x + -7 (10 * 4 + -1x * 4 + -3x2 * 4) = 2x + -7 (40 + -4x + -12x2) = 2x + -7 Reorder the terms: 40 + -4x + -12x2 = -7 + 2x Solving 40 + -4x + -12x2 = -7 + 2x Solving for variable 'x'. Reorder the terms: 40 + 7 + -4x + -2x + -12x2 = -7 + 2x + 7 + -2x Combine like terms: 40 + 7 = 47 47 + -4x + -2x + -12x2 = -7 + 2x + 7 + -2x Combine like terms: -4x + -2x = -6x 47 + -6x + -12x2 = -7 + 2x + 7 + -2x Reorder the terms: 47 + -6x + -12x2 = -7 + 7 + 2x + -2x Combine like terms: -7 + 7 = 0 47 + -6x + -12x2 = 0 + 2x + -2x 47 + -6x + -12x2 = 2x + -2x Combine like terms: 2x + -2x = 0 47 + -6x + -12x2 = 0 Begin completing the square. Divide all terms by -12 the coefficient of the squared term: Divide each side by '-12'. -3.916666667 + 0.5x + x2 = 0 Move the constant term to the right: Add '3.916666667' to each side of the equation. -3.916666667 + 0.5x + 3.916666667 + x2 = 0 + 3.916666667 Reorder the terms: -3.916666667 + 3.916666667 + 0.5x + x2 = 0 + 3.916666667 Combine like terms: -3.916666667 + 3.916666667 = 0.000000000 0.000000000 + 0.5x + x2 = 0 + 3.916666667 0.5x + x2 = 0 + 3.916666667 Combine like terms: 0 + 3.916666667 = 3.916666667 0.5x + x2 = 3.916666667 The x term is 0.5x. Take half its coefficient (0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. 0.5x + 0.0625 + x2 = 3.916666667 + 0.0625 Reorder the terms: 0.0625 + 0.5x + x2 = 3.916666667 + 0.0625 Combine like terms: 3.916666667 + 0.0625 = 3.979166667 0.0625 + 0.5x + x2 = 3.979166667 Factor a perfect square on the left side: (x + 0.25)(x + 0.25) = 3.979166667 Calculate the square root of the right side: 1.994784867 Break this problem into two subproblems by setting (x + 0.25) equal to 1.994784867 and -1.994784867.Subproblem 1
x + 0.25 = 1.994784867 Simplifying x + 0.25 = 1.994784867 Reorder the terms: 0.25 + x = 1.994784867 Solving 0.25 + x = 1.994784867 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 1.994784867 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 1.994784867 + -0.25 x = 1.994784867 + -0.25 Combine like terms: 1.994784867 + -0.25 = 1.744784867 x = 1.744784867 Simplifying x = 1.744784867Subproblem 2
x + 0.25 = -1.994784867 Simplifying x + 0.25 = -1.994784867 Reorder the terms: 0.25 + x = -1.994784867 Solving 0.25 + x = -1.994784867 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -1.994784867 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -1.994784867 + -0.25 x = -1.994784867 + -0.25 Combine like terms: -1.994784867 + -0.25 = -2.244784867 x = -2.244784867 Simplifying x = -2.244784867Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.744784867, -2.244784867}
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