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Simplifying (x(x + -1.8)) = -1.3225 Reorder the terms: (x(-1.8 + x)) = -1.3225 ((-1.8 * x + x * x)) = -1.3225 ((-1.8x + x2)) = -1.3225 (-1.8x + x2) = -1.3225 Remove parenthesis around (-1.8x + x2) -1.8x + x2 = -1.3225 Solving -1.8x + x2 = -1.3225 Solving for variable 'x'. Reorder the terms: 1.3225 + -1.8x + x2 = -1.3225 + 1.3225 Combine like terms: -1.3225 + 1.3225 = 0.0000 1.3225 + -1.8x + x2 = 0.0000 Begin completing the square. Move the constant term to the right: Add '-1.3225' to each side of the equation. 1.3225 + -1.8x + -1.3225 + x2 = 0.0000 + -1.3225 Reorder the terms: 1.3225 + -1.3225 + -1.8x + x2 = 0.0000 + -1.3225 Combine like terms: 1.3225 + -1.3225 = 0.0000 0.0000 + -1.8x + x2 = 0.0000 + -1.3225 -1.8x + x2 = 0.0000 + -1.3225 Combine like terms: 0.0000 + -1.3225 = -1.3225 -1.8x + x2 = -1.3225 The x term is -1.8x. Take half its coefficient (-0.9). Square it (0.81) and add it to both sides. Add '0.81' to each side of the equation. -1.8x + 0.81 + x2 = -1.3225 + 0.81 Reorder the terms: 0.81 + -1.8x + x2 = -1.3225 + 0.81 Combine like terms: -1.3225 + 0.81 = -0.5125 0.81 + -1.8x + x2 = -0.5125 Factor a perfect square on the left side: (x + -0.9)(x + -0.9) = -0.5125 Can't calculate square root of the right side. The solution to this equation could not be determined.
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