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Simplifying x2 + -8x + 79 = 0 Reorder the terms: 79 + -8x + x2 = 0 Solving 79 + -8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-79' to each side of the equation. 79 + -8x + -79 + x2 = 0 + -79 Reorder the terms: 79 + -79 + -8x + x2 = 0 + -79 Combine like terms: 79 + -79 = 0 0 + -8x + x2 = 0 + -79 -8x + x2 = 0 + -79 Combine like terms: 0 + -79 = -79 -8x + x2 = -79 The x term is -8x. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8x + 16 + x2 = -79 + 16 Reorder the terms: 16 + -8x + x2 = -79 + 16 Combine like terms: -79 + 16 = -63 16 + -8x + x2 = -63 Factor a perfect square on the left side: (x + -4)(x + -4) = -63 Can't calculate square root of the right side. The solution to this equation could not be determined.
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