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Simplifying 4X + 4 * 7X2 + 2X + 5 = 0 Multiply 4 * 7 4X + 28X2 + 2X + 5 = 0 Reorder the terms: 5 + 4X + 2X + 28X2 = 0 Combine like terms: 4X + 2X = 6X 5 + 6X + 28X2 = 0 Solving 5 + 6X + 28X2 = 0 Solving for variable 'X'. Begin completing the square. Divide all terms by 28 the coefficient of the squared term: Divide each side by '28'. 0.1785714286 + 0.2142857143X + X2 = 0 Move the constant term to the right: Add '-0.1785714286' to each side of the equation. 0.1785714286 + 0.2142857143X + -0.1785714286 + X2 = 0 + -0.1785714286 Reorder the terms: 0.1785714286 + -0.1785714286 + 0.2142857143X + X2 = 0 + -0.1785714286 Combine like terms: 0.1785714286 + -0.1785714286 = 0.0000000000 0.0000000000 + 0.2142857143X + X2 = 0 + -0.1785714286 0.2142857143X + X2 = 0 + -0.1785714286 Combine like terms: 0 + -0.1785714286 = -0.1785714286 0.2142857143X + X2 = -0.1785714286 The X term is 0.2142857143X. Take half its coefficient (0.1071428572). Square it (0.01147959185) and add it to both sides. Add '0.01147959185' to each side of the equation. 0.2142857143X + 0.01147959185 + X2 = -0.1785714286 + 0.01147959185 Reorder the terms: 0.01147959185 + 0.2142857143X + X2 = -0.1785714286 + 0.01147959185 Combine like terms: -0.1785714286 + 0.01147959185 = -0.16709183675 0.01147959185 + 0.2142857143X + X2 = -0.16709183675 Factor a perfect square on the left side: (X + 0.1071428572)(X + 0.1071428572) = -0.16709183675 Can't calculate square root of the right side. The solution to this equation could not be determined.
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