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Simplifying -7x2 = -4x + 4 Reorder the terms: -7x2 = 4 + -4x Solving -7x2 = 4 + -4x Solving for variable 'x'. Reorder the terms: -4 + 4x + -7x2 = 4 + -4x + -4 + 4x Reorder the terms: -4 + 4x + -7x2 = 4 + -4 + -4x + 4x Combine like terms: 4 + -4 = 0 -4 + 4x + -7x2 = 0 + -4x + 4x -4 + 4x + -7x2 = -4x + 4x Combine like terms: -4x + 4x = 0 -4 + 4x + -7x2 = 0 Begin completing the square. Divide all terms by -7 the coefficient of the squared term: Divide each side by '-7'. 0.5714285714 + -0.5714285714x + x2 = 0 Move the constant term to the right: Add '-0.5714285714' to each side of the equation. 0.5714285714 + -0.5714285714x + -0.5714285714 + x2 = 0 + -0.5714285714 Reorder the terms: 0.5714285714 + -0.5714285714 + -0.5714285714x + x2 = 0 + -0.5714285714 Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000 0.0000000000 + -0.5714285714x + x2 = 0 + -0.5714285714 -0.5714285714x + x2 = 0 + -0.5714285714 Combine like terms: 0 + -0.5714285714 = -0.5714285714 -0.5714285714x + x2 = -0.5714285714 The x term is -0.5714285714x. Take half its coefficient (-0.2857142857). Square it (0.08163265305) and add it to both sides. Add '0.08163265305' to each side of the equation. -0.5714285714x + 0.08163265305 + x2 = -0.5714285714 + 0.08163265305 Reorder the terms: 0.08163265305 + -0.5714285714x + x2 = -0.5714285714 + 0.08163265305 Combine like terms: -0.5714285714 + 0.08163265305 = -0.48979591835 0.08163265305 + -0.5714285714x + x2 = -0.48979591835 Factor a perfect square on the left side: (x + -0.2857142857)(x + -0.2857142857) = -0.48979591835 Can't calculate square root of the right side. The solution to this equation could not be determined.
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