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Simplifying 7x2 + -4x + 70 = 0 Reorder the terms: 70 + -4x + 7x2 = 0 Solving 70 + -4x + 7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 10 + -0.5714285714x + x2 = 0 Move the constant term to the right: Add '-10' to each side of the equation. 10 + -0.5714285714x + -10 + x2 = 0 + -10 Reorder the terms: 10 + -10 + -0.5714285714x + x2 = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -0.5714285714x + x2 = 0 + -10 -0.5714285714x + x2 = 0 + -10 Combine like terms: 0 + -10 = -10 -0.5714285714x + x2 = -10 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 = -10 + 0.08163265305 Reorder the terms: 0.08163265305 + -0.5714285714x + x2 = -10 + 0.08163265305 Combine like terms: -10 + 0.08163265305 = -9.91836734695 0.08163265305 + -0.5714285714x + x2 = -9.91836734695 Factor a perfect square on the left side: (x + -0.2857142857)(x + -0.2857142857) = -9.91836734695 Can't calculate square root of the right side. The solution to this equation could not be determined.
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