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Simplifying 6x + -30 + 12x + -60 = 6x2 + 36x + 6x + 36 Reorder the terms: -30 + -60 + 6x + 12x = 6x2 + 36x + 6x + 36 Combine like terms: -30 + -60 = -90 -90 + 6x + 12x = 6x2 + 36x + 6x + 36 Combine like terms: 6x + 12x = 18x -90 + 18x = 6x2 + 36x + 6x + 36 Reorder the terms: -90 + 18x = 36 + 36x + 6x + 6x2 Combine like terms: 36x + 6x = 42x -90 + 18x = 36 + 42x + 6x2 Solving -90 + 18x = 36 + 42x + 6x2 Solving for variable 'x'. Reorder the terms: -90 + -36 + 18x + -42x + -6x2 = 36 + 42x + 6x2 + -36 + -42x + -6x2 Combine like terms: -90 + -36 = -126 -126 + 18x + -42x + -6x2 = 36 + 42x + 6x2 + -36 + -42x + -6x2 Combine like terms: 18x + -42x = -24x -126 + -24x + -6x2 = 36 + 42x + 6x2 + -36 + -42x + -6x2 Reorder the terms: -126 + -24x + -6x2 = 36 + -36 + 42x + -42x + 6x2 + -6x2 Combine like terms: 36 + -36 = 0 -126 + -24x + -6x2 = 0 + 42x + -42x + 6x2 + -6x2 -126 + -24x + -6x2 = 42x + -42x + 6x2 + -6x2 Combine like terms: 42x + -42x = 0 -126 + -24x + -6x2 = 0 + 6x2 + -6x2 -126 + -24x + -6x2 = 6x2 + -6x2 Combine like terms: 6x2 + -6x2 = 0 -126 + -24x + -6x2 = 0 Factor out the Greatest Common Factor (GCF), '-6'. -6(21 + 4x + x2) = 0 Ignore the factor -6.Subproblem 1
Set the factor '(21 + 4x + x2)' equal to zero and attempt to solve: Simplifying 21 + 4x + x2 = 0 Solving 21 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-21' to each side of the equation. 21 + 4x + -21 + x2 = 0 + -21 Reorder the terms: 21 + -21 + 4x + x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 4x + x2 = 0 + -21 4x + x2 = 0 + -21 Combine like terms: 0 + -21 = -21 4x + x2 = -21 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 = -21 + 4 Reorder the terms: 4 + 4x + x2 = -21 + 4 Combine like terms: -21 + 4 = -17 4 + 4x + x2 = -17 Factor a perfect square on the left side: (x + 2)(x + 2) = -17 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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