Yangi mavzuni mustahkamlash: 60 – misol.
Quyidagi tengsizliklardan qaysilari kvadrat tengsizlik ekanini ko’rsating:
1) x2 – 4 > 0 kvadrat tengsizlik; 2) x2 – 3x – 5≤ 0 kvadrat tengsizlik;
3) x + 4 > 0 kvadrat tengsizlik emas; 4) 4x – 5< 0 kvadrat tengsizlik emas;
5) x2 – 1 ≤ 0 kvadrat tengsizlik; 6) x4 – 16 > 0 kvadrat tengsizlik;
61 – misol.
Quyidagi tengsizlikni kvadrat tengsizlikka keltiring:
1) x2 < 3x+2, x2 – 3x – 2 < 0. 2) 3x2 –1>x, 3x2 – x –1 > 0.
3) 3x2 2 –5x+6, 3x2 – x2 + 5x – 6, 2x2 + 5x – 6,
4) 2x(x + 1)< x+5, 2x2 + 2x – x – 5 < 0, 2x2 + x – 5 < 0,
62 – misol og’zaki bajariladi.
63 – misol.
1) (x – 2)( x + 4) >0 2) (x – 11)(x– 3)<0
yoki
Javob: x >2. Javob: 3 < x < 11. 0>
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