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Simplifying 3(x)(x + -4) = 765 Reorder the terms: 3x(-4 + x) = 765 (-4 * 3x + x * 3x) = 765 (-12x + 3x2) = 765 Solving -12x + 3x2 = 765 Solving for variable 'x'. Reorder the terms: -765 + -12x + 3x2 = 765 + -765 Combine like terms: 765 + -765 = 0 -765 + -12x + 3x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-255 + -4x + x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-255 + -4x + x2)' equal to zero and attempt to solve: Simplifying -255 + -4x + x2 = 0 Solving -255 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '255' to each side of the equation. -255 + -4x + 255 + x2 = 0 + 255 Reorder the terms: -255 + 255 + -4x + x2 = 0 + 255 Combine like terms: -255 + 255 = 0 0 + -4x + x2 = 0 + 255 -4x + x2 = 0 + 255 Combine like terms: 0 + 255 = 255 -4x + x2 = 255 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = 255 + 4 Reorder the terms: 4 + -4x + x2 = 255 + 4 Combine like terms: 255 + 4 = 259 4 + -4x + x2 = 259 Factor a perfect square on the left side: (x + -2)(x + -2) = 259 Calculate the square root of the right side: 16.093476939 Break this problem into two subproblems by setting (x + -2) equal to 16.093476939 and -16.093476939.Subproblem 1
x + -2 = 16.093476939 Simplifying x + -2 = 16.093476939 Reorder the terms: -2 + x = 16.093476939 Solving -2 + x = 16.093476939 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 16.093476939 + 2 Combine like terms: -2 + 2 = 0 0 + x = 16.093476939 + 2 x = 16.093476939 + 2 Combine like terms: 16.093476939 + 2 = 18.093476939 x = 18.093476939 Simplifying x = 18.093476939Subproblem 2
x + -2 = -16.093476939 Simplifying x + -2 = -16.093476939 Reorder the terms: -2 + x = -16.093476939 Solving -2 + x = -16.093476939 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -16.093476939 + 2 Combine like terms: -2 + 2 = 0 0 + x = -16.093476939 + 2 x = -16.093476939 + 2 Combine like terms: -16.093476939 + 2 = -14.093476939 x = -14.093476939 Simplifying x = -14.093476939Solution
The solution to the problem is based on the solutions from the subproblems. x = {18.093476939, -14.093476939}Solution
x = {18.093476939, -14.093476939}
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