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Simplifying 4x + -1.2x2 + -11x + -30 = 0 Reorder the terms: -30 + 4x + -11x + -1.2x2 = 0 Combine like terms: 4x + -11x = -7x -30 + -7x + -1.2x2 = 0 Solving -30 + -7x + -1.2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -1.2 the coefficient of the squared term: Divide each side by '-1.2'. 25 + 5.833333333x + x2 = 0 Move the constant term to the right: Add '-25' to each side of the equation. 25 + 5.833333333x + -25 + x2 = 0 + -25 Reorder the terms: 25 + -25 + 5.833333333x + x2 = 0 + -25 Combine like terms: 25 + -25 = 0 0 + 5.833333333x + x2 = 0 + -25 5.833333333x + x2 = 0 + -25 Combine like terms: 0 + -25 = -25 5.833333333x + x2 = -25 The x term is 5.833333333x. Take half its coefficient (2.916666667). Square it (8.506944446) and add it to both sides. Add '8.506944446' to each side of the equation. 5.833333333x + 8.506944446 + x2 = -25 + 8.506944446 Reorder the terms: 8.506944446 + 5.833333333x + x2 = -25 + 8.506944446 Combine like terms: -25 + 8.506944446 = -16.493055554 8.506944446 + 5.833333333x + x2 = -16.493055554 Factor a perfect square on the left side: (x + 2.916666667)(x + 2.916666667) = -16.493055554 Can't calculate square root of the right side. The solution to this equation could not be determined.
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