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Simplifying x2 + -16x + 220 = 0 Reorder the terms: 220 + -16x + x2 = 0 Solving 220 + -16x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-220' to each side of the equation. 220 + -16x + -220 + x2 = 0 + -220 Reorder the terms: 220 + -220 + -16x + x2 = 0 + -220 Combine like terms: 220 + -220 = 0 0 + -16x + x2 = 0 + -220 -16x + x2 = 0 + -220 Combine like terms: 0 + -220 = -220 -16x + x2 = -220 The x term is -16x. Take half its coefficient (-8). Square it (64) and add it to both sides. Add '64' to each side of the equation. -16x + 64 + x2 = -220 + 64 Reorder the terms: 64 + -16x + x2 = -220 + 64 Combine like terms: -220 + 64 = -156 64 + -16x + x2 = -156 Factor a perfect square on the left side: (x + -8)(x + -8) = -156 Can't calculate square root of the right side. The solution to this equation could not be determined.
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