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Simplifying (2x2 + -2x + -4) + (-4x2 + 5x + -1) = 0 Reorder the terms: (-4 + -2x + 2x2) + (-4x2 + 5x + -1) = 0 Remove parenthesis around (-4 + -2x + 2x2) -4 + -2x + 2x2 + (-4x2 + 5x + -1) = 0 Reorder the terms: -4 + -2x + 2x2 + (-1 + 5x + -4x2) = 0 Remove parenthesis around (-1 + 5x + -4x2) -4 + -2x + 2x2 + -1 + 5x + -4x2 = 0 Reorder the terms: -4 + -1 + -2x + 5x + 2x2 + -4x2 = 0 Combine like terms: -4 + -1 = -5 -5 + -2x + 5x + 2x2 + -4x2 = 0 Combine like terms: -2x + 5x = 3x -5 + 3x + 2x2 + -4x2 = 0 Combine like terms: 2x2 + -4x2 = -2x2 -5 + 3x + -2x2 = 0 Solving -5 + 3x + -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'. 2.5 + -1.5x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -1.5x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -1.5x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -1.5x + x2 = 0 + -2.5 -1.5x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -1.5x + x2 = -2.5 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = -2.5 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = -2.5 + 0.5625 Combine like terms: -2.5 + 0.5625 = -1.9375 0.5625 + -1.5x + x2 = -1.9375 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = -1.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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