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Simplifying (x + -4)(x2 + -1x + -20) = 0 Reorder the terms: (-4 + x)(x2 + -1x + -20) = 0 Reorder the terms: (-4 + x)(-20 + -1x + x2) = 0 Multiply (-4 + x) * (-20 + -1x + x2) (-4(-20 + -1x + x2) + x(-20 + -1x + x2)) = 0 ((-20 * -4 + -1x * -4 + x2 * -4) + x(-20 + -1x + x2)) = 0 ((80 + 4x + -4x2) + x(-20 + -1x + x2)) = 0 (80 + 4x + -4x2 + (-20 * x + -1x * x + x2 * x)) = 0 (80 + 4x + -4x2 + (-20x + -1x2 + x3)) = 0 Reorder the terms: (80 + 4x + -20x + -4x2 + -1x2 + x3) = 0 Combine like terms: 4x + -20x = -16x (80 + -16x + -4x2 + -1x2 + x3) = 0 Combine like terms: -4x2 + -1x2 = -5x2 (80 + -16x + -5x2 + x3) = 0 Solving 80 + -16x + -5x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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