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Simplifying 2(x2 + -2x + 126) = 0 Reorder the terms: 2(126 + -2x + x2) = 0 (126 * 2 + -2x * 2 + x2 * 2) = 0 (252 + -4x + 2x2) = 0 Solving 252 + -4x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(126 + -2x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(126 + -2x + x2)' equal to zero and attempt to solve: Simplifying 126 + -2x + x2 = 0 Solving 126 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-126' to each side of the equation. 126 + -2x + -126 + x2 = 0 + -126 Reorder the terms: 126 + -126 + -2x + x2 = 0 + -126 Combine like terms: 126 + -126 = 0 0 + -2x + x2 = 0 + -126 -2x + x2 = 0 + -126 Combine like terms: 0 + -126 = -126 -2x + x2 = -126 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -126 + 1 Reorder the terms: 1 + -2x + x2 = -126 + 1 Combine like terms: -126 + 1 = -125 1 + -2x + x2 = -125 Factor a perfect square on the left side: (x + -1)(x + -1) = -125 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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