Dariusstefanbogza Dariusstefanbogza 25-10-2022 Matematică a fost răspuns 7 Efectuați: a (x − 3)(x + 2) + (2x + 1)(3x − 2) - 2x(x + 1); c (x²+x)(x + 1) − x²(2 + x) + (x + 2)(3 + x²) - 6; (3x + 1)(x² + 2x - 5) - (x + 2)(2x² - x + 3); b (x-6) (2x + 5) - (x + 2)(x + 3) + (3 - x)(x + 4); d (x² + 2x) (x + 3) + 2x(x²-x-1)-(3x − 1)(x² − x); *(x-4) (2x² + x + 3) + (3x-2)(x - 5x² +19). DAU COROANA