Answer:1.) (x + 5) (x² - 5x + 25)2.) (np - m) (n²p² + npm + m²)3.) (b + 7) (b² - 7b + 49)4.) (y - 4) (y² + 4yz + 16z²)5.) (2x + 1) (4x² - 2x + 1)Step-by-step explanation:Cinalculate ko po yan myself, kakadiscuss lang po namin last week. Hope it helps :D