Simplify each term:

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• Expand the product \((x + 4)(x - 5)\).
• Use the distributive property (FOIL method):
• \[(x + 4)(x - 5) = x(x) + x(-5) + 4(x) + 4(-5).\]
• \[ = x^2 - 5x + 4x - 20. \]
• \[ = x^2 - x - 20. \]
• The expanded form is \(\boxed{x^2 - x - 20}\).

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