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Simplifying -1(7x2 + -6x + 6) = 0 Reorder the terms: -1(6 + -6x + 7x2) = 0 (6 * -1 + -6x * -1 + 7x2 * -1) = 0 (-6 + 6x + -7x2) = 0 Solving -6 + 6x + -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'. 0.8571428571 + -0.8571428571x + x2 = 0 Move the constant term to the right: Add '-0.8571428571' to each side of the equation. 0.8571428571 + -0.8571428571x + -0.8571428571 + x2 = 0 + -0.8571428571 Reorder the terms: 0.8571428571 + -0.8571428571 + -0.8571428571x + x2 = 0 + -0.8571428571 Combine like terms: 0.8571428571 + -0.8571428571 = 0.0000000000 0.0000000000 + -0.8571428571x + x2 = 0 + -0.8571428571 -0.8571428571x + x2 = 0 + -0.8571428571 Combine like terms: 0 + -0.8571428571 = -0.8571428571 -0.8571428571x + x2 = -0.8571428571 The x term is -0.8571428571x. Take half its coefficient (-0.4285714286). Square it (0.1836734694) and add it to both sides. Add '0.1836734694' to each side of the equation. -0.8571428571x + 0.1836734694 + x2 = -0.8571428571 + 0.1836734694 Reorder the terms: 0.1836734694 + -0.8571428571x + x2 = -0.8571428571 + 0.1836734694 Combine like terms: -0.8571428571 + 0.1836734694 = -0.6734693877 0.1836734694 + -0.8571428571x + x2 = -0.6734693877 Factor a perfect square on the left side: (x + -0.4285714286)(x + -0.4285714286) = -0.6734693877 Can't calculate square root of the right side. The solution to this equation could not be determined.
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