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Simplify: $$ (2x + 3)(x - 4) $$
  1. Expand: $$ 2x^2 - 8x + 3x - 12 $$
  2. Combine like terms: $$ 2x^2 - 5x - 12 $$
Final: $$ 2x^2 - 5x - 12 $$
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