1)(у-8)²=у²-2*8*у+8²=у²-16у+64;
2)(6х+а)²=(6х)²+2*6х*а+а²=36х²+12ах+а²;
3)(с-5)(с+5)=с²-25;
4)(3а+2в)(3а-2в)=9а²-4в²;
5)(у²-4а)(у²+4а)=у⁴-16а².
1)(у-8)²=у²-2*8*у+8²=у²-16у+64;
2)(6х+а)²=(6х)²+2*6х*а+а²=36х²+12ах+а²;
3)(с-5)(с+5)=с²-25;
4)(3а+2в)(3а-2в)=9а²-4в²;
5)(у²-4а)(у²+4а)=у⁴-16а².