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Simplifying (x2 + x + -20)(x + -4) = 0 Reorder the terms: (-20 + x + x2)(x + -4) = 0 Reorder the terms: (-20 + x + x2)(-4 + x) = 0 Multiply (-20 + x + x2) * (-4 + x) (-20(-4 + x) + x(-4 + x) + x2(-4 + x)) = 0 ((-4 * -20 + x * -20) + x(-4 + x) + x2(-4 + x)) = 0 ((80 + -20x) + x(-4 + x) + x2(-4 + x)) = 0 (80 + -20x + (-4 * x + x * x) + x2(-4 + x)) = 0 (80 + -20x + (-4x + x2) + x2(-4 + x)) = 0 (80 + -20x + -4x + x2 + (-4 * x2 + x * x2)) = 0 (80 + -20x + -4x + x2 + (-4x2 + x3)) = 0 Combine like terms: -20x + -4x = -24x (80 + -24x + x2 + -4x2 + x3) = 0 Combine like terms: x2 + -4x2 = -3x2 (80 + -24x + -3x2 + x3) = 0 Solving 80 + -24x + -3x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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