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Simplifying x2 + -5x + 64 = 0 Reorder the terms: 64 + -5x + x2 = 0 Solving 64 + -5x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-64' to each side of the equation. 64 + -5x + -64 + x2 = 0 + -64 Reorder the terms: 64 + -64 + -5x + x2 = 0 + -64 Combine like terms: 64 + -64 = 0 0 + -5x + x2 = 0 + -64 -5x + x2 = 0 + -64 Combine like terms: 0 + -64 = -64 -5x + x2 = -64 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -64 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -64 + 6.25 Combine like terms: -64 + 6.25 = -57.75 6.25 + -5x + x2 = -57.75 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -57.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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