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Simplifying 7x2 = -12 + 8x Solving 7x2 = -12 + 8x Solving for variable 'x'. Reorder the terms: 12 + -8x + 7x2 = -12 + 8x + 12 + -8x Reorder the terms: 12 + -8x + 7x2 = -12 + 12 + 8x + -8x Combine like terms: -12 + 12 = 0 12 + -8x + 7x2 = 0 + 8x + -8x 12 + -8x + 7x2 = 8x + -8x Combine like terms: 8x + -8x = 0 12 + -8x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 1.714285714 + -1.142857143x + x2 = 0 Move the constant term to the right: Add '-1.714285714' to each side of the equation. 1.714285714 + -1.142857143x + -1.714285714 + x2 = 0 + -1.714285714 Reorder the terms: 1.714285714 + -1.714285714 + -1.142857143x + x2 = 0 + -1.714285714 Combine like terms: 1.714285714 + -1.714285714 = 0.000000000 0.000000000 + -1.142857143x + x2 = 0 + -1.714285714 -1.142857143x + x2 = 0 + -1.714285714 Combine like terms: 0 + -1.714285714 = -1.714285714 -1.142857143x + x2 = -1.714285714 The x term is -1.142857143x. 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. -1.142857143x + 0.3265306123 + x2 = -1.714285714 + 0.3265306123 Reorder the terms: 0.3265306123 + -1.142857143x + x2 = -1.714285714 + 0.3265306123 Combine like terms: -1.714285714 + 0.3265306123 = -1.3877551017 0.3265306123 + -1.142857143x + x2 = -1.3877551017 Factor a perfect square on the left side: (x + -0.5714285715)(x + -0.5714285715) = -1.3877551017 Can't calculate square root of the right side. The solution to this equation could not be determined.
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