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Simplifying 7x2 + 6 = -7x Reorder the terms: 6 + 7x2 = -7x Solving 6 + 7x2 = -7x Solving for variable 'x'. Reorder the terms: 6 + 7x + 7x2 = -7x + 7x Combine like terms: -7x + 7x = 0 6 + 7x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 0.8571428571 + x + x2 = 0 Move the constant term to the right: Add '-0.8571428571' to each side of the equation. 0.8571428571 + x + -0.8571428571 + x2 = 0 + -0.8571428571 Reorder the terms: 0.8571428571 + -0.8571428571 + x + x2 = 0 + -0.8571428571 Combine like terms: 0.8571428571 + -0.8571428571 = 0.0000000000 0.0000000000 + x + x2 = 0 + -0.8571428571 x + x2 = 0 + -0.8571428571 Combine like terms: 0 + -0.8571428571 = -0.8571428571 x + x2 = -0.8571428571 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + x2 = -0.8571428571 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = -0.8571428571 + 0.25 Combine like terms: -0.8571428571 + 0.25 = -0.6071428571 1.25 + x2 = -0.6071428571 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.6071428571 Can't calculate square root of the right side. The solution to this equation could not be determined.
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