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Simplifying (x2 + 2.5x + 1)(x + 4) = 0 Reorder the terms: (1 + 2.5x + x2)(x + 4) = 0 Reorder the terms: (1 + 2.5x + x2)(4 + x) = 0 Multiply (1 + 2.5x + x2) * (4 + x) (1(4 + x) + 2.5x * (4 + x) + x2(4 + x)) = 0 ((4 * 1 + x * 1) + 2.5x * (4 + x) + x2(4 + x)) = 0 ((4 + 1x) + 2.5x * (4 + x) + x2(4 + x)) = 0 (4 + 1x + (4 * 2.5x + x * 2.5x) + x2(4 + x)) = 0 (4 + 1x + (10x + 2.5x2) + x2(4 + x)) = 0 (4 + 1x + 10x + 2.5x2 + (4 * x2 + x * x2)) = 0 (4 + 1x + 10x + 2.5x2 + (4x2 + x3)) = 0 Combine like terms: 1x + 10x = 11x (4 + 11x + 2.5x2 + 4x2 + x3) = 0 Combine like terms: 2.5x2 + 4x2 = 6.5x2 (4 + 11x + 6.5x2 + x3) = 0 Solving 4 + 11x + 6.5x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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