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Simplifying -2x2 + -0.7x + -3 = 0 Reorder the terms: -3 + -0.7x + -2x2 = 0 Solving -3 + -0.7x + -2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. 1.5 + 0.35x + x2 = 0 Move the constant term to the right: Add '-1.5' to each side of the equation. 1.5 + 0.35x + -1.5 + x2 = 0 + -1.5 Reorder the terms: 1.5 + -1.5 + 0.35x + x2 = 0 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + 0.35x + x2 = 0 + -1.5 0.35x + x2 = 0 + -1.5 Combine like terms: 0 + -1.5 = -1.5 0.35x + x2 = -1.5 The x term is 0.35x. Take half its coefficient (0.175). Square it (0.030625) and add it to both sides. Add '0.030625' to each side of the equation. 0.35x + 0.030625 + x2 = -1.5 + 0.030625 Reorder the terms: 0.030625 + 0.35x + x2 = -1.5 + 0.030625 Combine like terms: -1.5 + 0.030625 = -1.469375 0.030625 + 0.35x + x2 = -1.469375 Factor a perfect square on the left side: (x + 0.175)(x + 0.175) = -1.469375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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