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Simplifying (a + -1b)(a + -1b) + 4(a + -1b) + 4 = 0 Multiply (a + -1b) * (a + -1b) (a(a + -1b) + -1b * (a + -1b)) + 4(a + -1b) + 4 = 0 ((a * a + -1b * a) + -1b * (a + -1b)) + 4(a + -1b) + 4 = 0 Reorder the terms: ((-1ab + a2) + -1b * (a + -1b)) + 4(a + -1b) + 4 = 0 ((-1ab + a2) + -1b * (a + -1b)) + 4(a + -1b) + 4 = 0 (-1ab + a2 + (a * -1b + -1b * -1b)) + 4(a + -1b) + 4 = 0 (-1ab + a2 + (-1ab + 1b2)) + 4(a + -1b) + 4 = 0 Reorder the terms: (-1ab + -1ab + a2 + 1b2) + 4(a + -1b) + 4 = 0 Combine like terms: -1ab + -1ab = -2ab (-2ab + a2 + 1b2) + 4(a + -1b) + 4 = 0 -2ab + a2 + 1b2 + (a * 4 + -1b * 4) + 4 = 0 -2ab + a2 + 1b2 + (4a + -4b) + 4 = 0 Reorder the terms: 4 + 4a + -2ab + a2 + -4b + 1b2 = 0 Solving 4 + 4a + -2ab + a2 + -4b + 1b2 = 0 Solving for variable 'a'. The solution to this equation could not be determined.
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