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Simplifying x2 + -80x = -1761 Reorder the terms: -80x + x2 = -1761 Solving -80x + x2 = -1761 Solving for variable 'x'. Reorder the terms: 1761 + -80x + x2 = -1761 + 1761 Combine like terms: -1761 + 1761 = 0 1761 + -80x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1761' to each side of the equation. 1761 + -80x + -1761 + x2 = 0 + -1761 Reorder the terms: 1761 + -1761 + -80x + x2 = 0 + -1761 Combine like terms: 1761 + -1761 = 0 0 + -80x + x2 = 0 + -1761 -80x + x2 = 0 + -1761 Combine like terms: 0 + -1761 = -1761 -80x + x2 = -1761 The x term is -80x. Take half its coefficient (-40). Square it (1600) and add it to both sides. Add '1600' to each side of the equation. -80x + 1600 + x2 = -1761 + 1600 Reorder the terms: 1600 + -80x + x2 = -1761 + 1600 Combine like terms: -1761 + 1600 = -161 1600 + -80x + x2 = -161 Factor a perfect square on the left side: (x + -40)(x + -40) = -161 Can't calculate square root of the right side. The solution to this equation could not be determined.
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