5- Yozma nazorat ishi

1. Ifodani standart ko‘phad ko‘rinishida tasvirlang:

(a – 3)² + (a – 3)(a + 3) + 6a .

2. Ko‘paytuvchilarga ajrating:

16a² – 81; 3x² – 6x³; xy – 2y;

3. Ko‘phadni ko‘paytuvchilarga ajrating va uning a=1, b= bo‘lgandagi son qiymatini toping:

a² – 3ab + 3a – 9b.

4. Ko‘paytuvchilarga ajrating:

x² – 10x + 25; 3(x – 1) + y(x – 1); 2a² – 4ab + 2b².

5. Hisoblang:

(53³ + 47³) : (53² – 53 ∙ 47 + 47²).