zadania w załączniku 15 i 16 zadanie Dzięki ;))

Zad. 15 a) 3xy b) -2b² c) 2ab d) 14x e) 2 f) ½ Zad. 16 a) *₁ x²+4x+4 dla x=98 (x+2)² = (98+2)² = 100²=10000 *₂ x²+4x+10 dla x=98 (x+2)²+6 = (98+2)²+6 = 100²+6 = 10006 *₃ x²+3x+4 dla x=98 (x+2)²-x = (98+2)²-98 = 100²-98 = 9902 b) *₁ x²-0.2x+0.01 dla x = 3.1 (x-0.1)² = (3.1-0.1)² = 3² = 9 *₂ x²-0.2x+0.51 dla x = 3.1 (x-0.1)²+0.5 = (3.1-0.1)²+0.5 = 3²+0.5 = 9.5 *₃ x²-1.2x+0.01 dla x = 3.1 (x-0.1)²-x = (3.1-0.1)²-3.1 = 3²-3.1 = 9-3.1 = 5.9