Uchinchi yo’nalishda bilish faoliyatining rivojlanishi uchun zarur shart-sharoit yaratish ko’zda tutiladi

Hisoblashlarni soddalashtiring:

1. 
   189*211 q (200 -11)(200 Q 11) q 40000 – 121 q 39879;
   
2. 
   97 * 103 q (100 - 3)(100 Q 3) q 10000 – 9 q 9991;
   
3. 
   63² – 37² q (63 Q 37) * (63 - 37) q 100 * 26 q 2600;
   
4. 
   2005² – 1995² – (2005 Q 1995) (2005 - 1995) q 4000 * 10 q 40000
   

3.Yangi mavzuni mustahkamlash;


Ko’p hadlarni ko’paytuvchilarga ajratish.
1) a² – 25 q (a Q 5) (a - 5);
2) 36 – b² q (6 –b) (6 Q b);
3) 49a⁴ – 36 b² q (7a² – 6b) (7a²- 6b);
4) 0,01 a⁶ – 0,04b² q (0,1a³ Q 0,2b² ) (0,1a³ – 0,2b²);
5) (a - b)² – 4 q (a – b – 2 ) (a – b Q 2 );
6) (2a Q 3b)² - (a - 5b)² q (2a Q 3b Q a – 5b) (2a Q 3b – a Q 5 b) q (3a – 2b) *
*(a Q 8b);
Sinfda bajariladi: 386 – 393, 400- 401 – mashqlar; 394-399-mashqlarning toq raqamli misollari.
M a s a l a y e ch i sh n a m u n a l a r i .
№ 393. Ko’paytirishni (1) formuladan foydalanib bajaring.
Y e ch i sh . 3) ( 7ab Q x² y³)(7ab - x² y³) q (7ab) – ( x² y³ )² q 9ab² b² – x⁴y⁶.

№ 397. Soddalashtiring.

Y e ch i sh . 3) (2x Q 3y)(2x – 3y) Q (2x Q 3y)² q 4x² – 9y² Q 4x² Q 12xy Q 9y² q 8x² Q 12xy
№ 398. Ifodaning qiymatini toping:
3) 2 k (k - 7)(k Q 5) – (k - 5)² – (k - 7)(k Q 7), bunda kq
Y e ch i sh . Qavslarni ochamiz va soddalashtiramiz.
2 k (k - 7)(k Q 5) – (k - 5)² – (k - 7)(k Q 7) q 2k² – 4k – 70 – k² Q 10k – 25 – k² Q 49 q 6k-46 q 6* (- ) – 46q - 3 – 46 q - 49. Javob. -49.