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Simplifying 20 = (2x + -1a)(a + 2) Reorder the terms: 20 = (-1a + 2x)(a + 2) Reorder the terms: 20 = (-1a + 2x)(2 + a) Multiply (-1a + 2x) * (2 + a) 20 = (-1a * (2 + a) + 2x * (2 + a)) 20 = ((2 * -1a + a * -1a) + 2x * (2 + a)) 20 = ((-2a + -1a2) + 2x * (2 + a)) 20 = (-2a + -1a2 + (2 * 2x + a * 2x)) Reorder the terms: 20 = (-2a + -1a2 + (2ax + 4x)) 20 = (-2a + -1a2 + (2ax + 4x)) Reorder the terms: 20 = (-2a + 2ax + -1a2 + 4x) 20 = (-2a + 2ax + -1a2 + 4x) Solving 20 = -2a + 2ax + -1a2 + 4x Solving for variable 'a'. Reorder the terms: 20 + 2a + -2ax + a2 + -4x = -2a + 2a + 2ax + -2ax + -1a2 + a2 + 4x + -4x Combine like terms: -2a + 2a = 0 20 + 2a + -2ax + a2 + -4x = 0 + 2ax + -2ax + -1a2 + a2 + 4x + -4x 20 + 2a + -2ax + a2 + -4x = 2ax + -2ax + -1a2 + a2 + 4x + -4x Combine like terms: 2ax + -2ax = 0 20 + 2a + -2ax + a2 + -4x = 0 + -1a2 + a2 + 4x + -4x 20 + 2a + -2ax + a2 + -4x = -1a2 + a2 + 4x + -4x Combine like terms: -1a2 + a2 = 0 20 + 2a + -2ax + a2 + -4x = 0 + 4x + -4x 20 + 2a + -2ax + a2 + -4x = 4x + -4x Combine like terms: 4x + -4x = 0 20 + 2a + -2ax + a2 + -4x = 0 The solution to this equation could not be determined.
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