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Simplifying 7n2 + -8n + 10 = 0 Reorder the terms: 10 + -8n + 7n2 = 0 Solving 10 + -8n + 7n2 = 0 Solving for variable 'n'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 1.428571429 + -1.142857143n + n2 = 0 Move the constant term to the right: Add '-1.428571429' to each side of the equation. 1.428571429 + -1.142857143n + -1.428571429 + n2 = 0 + -1.428571429 Reorder the terms: 1.428571429 + -1.428571429 + -1.142857143n + n2 = 0 + -1.428571429 Combine like terms: 1.428571429 + -1.428571429 = 0.000000000 0.000000000 + -1.142857143n + n2 = 0 + -1.428571429 -1.142857143n + n2 = 0 + -1.428571429 Combine like terms: 0 + -1.428571429 = -1.428571429 -1.142857143n + n2 = -1.428571429 The n term is -1.142857143n. Take half its coefficient (-0.5714285715). Square it (0.3265306123) and add it to both sides. Add '0.3265306123' to each side of the equation. -1.142857143n + 0.3265306123 + n2 = -1.428571429 + 0.3265306123 Reorder the terms: 0.3265306123 + -1.142857143n + n2 = -1.428571429 + 0.3265306123 Combine like terms: -1.428571429 + 0.3265306123 = -1.1020408167 0.3265306123 + -1.142857143n + n2 = -1.1020408167 Factor a perfect square on the left side: (n + -0.5714285715)(n + -0.5714285715) = -1.1020408167 Can't calculate square root of the right side. The solution to this equation could not be determined.
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