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Simplifying x2 + -4x + 57 = 0 Reorder the terms: 57 + -4x + x2 = 0 Solving 57 + -4x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-57' to each side of the equation. 57 + -4x + -57 + x2 = 0 + -57 Reorder the terms: 57 + -57 + -4x + x2 = 0 + -57 Combine like terms: 57 + -57 = 0 0 + -4x + x2 = 0 + -57 -4x + x2 = 0 + -57 Combine like terms: 0 + -57 = -57 -4x + x2 = -57 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 = -57 + 4 Reorder the terms: 4 + -4x + x2 = -57 + 4 Combine like terms: -57 + 4 = -53 4 + -4x + x2 = -53 Factor a perfect square on the left side: (x + -2)(x + -2) = -53 Can't calculate square root of the right side. The solution to this equation could not be determined.
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