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Simplifying 3x(2x + -5) + -1(4x + 30) = (5x + -19) + -5 Reorder the terms: 3x(-5 + 2x) + -1(4x + 30) = (5x + -19) + -5 (-5 * 3x + 2x * 3x) + -1(4x + 30) = (5x + -19) + -5 (-15x + 6x2) + -1(4x + 30) = (5x + -19) + -5 Reorder the terms: -15x + 6x2 + -1(30 + 4x) = (5x + -19) + -5 -15x + 6x2 + (30 * -1 + 4x * -1) = (5x + -19) + -5 -15x + 6x2 + (-30 + -4x) = (5x + -19) + -5 Reorder the terms: -30 + -15x + -4x + 6x2 = (5x + -19) + -5 Combine like terms: -15x + -4x = -19x -30 + -19x + 6x2 = (5x + -19) + -5 Reorder the terms: -30 + -19x + 6x2 = (-19 + 5x) + -5 Remove parenthesis around (-19 + 5x) -30 + -19x + 6x2 = -19 + 5x + -5 Reorder the terms: -30 + -19x + 6x2 = -19 + -5 + 5x Combine like terms: -19 + -5 = -24 -30 + -19x + 6x2 = -24 + 5x Solving -30 + -19x + 6x2 = -24 + 5x Solving for variable 'x'. Reorder the terms: -30 + 24 + -19x + -5x + 6x2 = -24 + 5x + 24 + -5x Combine like terms: -30 + 24 = -6 -6 + -19x + -5x + 6x2 = -24 + 5x + 24 + -5x Combine like terms: -19x + -5x = -24x -6 + -24x + 6x2 = -24 + 5x + 24 + -5x Reorder the terms: -6 + -24x + 6x2 = -24 + 24 + 5x + -5x Combine like terms: -24 + 24 = 0 -6 + -24x + 6x2 = 0 + 5x + -5x -6 + -24x + 6x2 = 5x + -5x Combine like terms: 5x + -5x = 0 -6 + -24x + 6x2 = 0 Factor out the Greatest Common Factor (GCF), '6'. 6(-1 + -4x + x2) = 0 Ignore the factor 6.Subproblem 1
Set the factor '(-1 + -4x + x2)' equal to zero and attempt to solve: Simplifying -1 + -4x + x2 = 0 Solving -1 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '1' to each side of the equation. -1 + -4x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -4x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -4x + x2 = 0 + 1 -4x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -4x + x2 = 1 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 = 1 + 4 Reorder the terms: 4 + -4x + x2 = 1 + 4 Combine like terms: 1 + 4 = 5 4 + -4x + x2 = 5 Factor a perfect square on the left side: (x + -2)(x + -2) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (x + -2) equal to 2.236067978 and -2.236067978.Subproblem 1
x + -2 = 2.236067978 Simplifying x + -2 = 2.236067978 Reorder the terms: -2 + x = 2.236067978 Solving -2 + x = 2.236067978 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 = 2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.236067978 + 2 x = 2.236067978 + 2 Combine like terms: 2.236067978 + 2 = 4.236067978 x = 4.236067978 Simplifying x = 4.236067978Subproblem 2
x + -2 = -2.236067978 Simplifying x + -2 = -2.236067978 Reorder the terms: -2 + x = -2.236067978 Solving -2 + x = -2.236067978 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 = -2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.236067978 + 2 x = -2.236067978 + 2 Combine like terms: -2.236067978 + 2 = -0.236067978 x = -0.236067978 Simplifying x = -0.236067978Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.236067978, -0.236067978}Solution
x = {4.236067978, -0.236067978}
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