22.Trapetsiyaningasoslaridanbiri 25 dm, o’rtachizig’iesa 30 dm. Trapetsiyaningikkinchiasosiuzunligini toping.
23. ABCD parallelogrammda AC = 10 sm, BD = 8 sm, BOC uchburchakning perimetri 16 sm, bunda O – AC va BD diagonallar kesishgan nuqta. AD tomon uzunligini toping.
24. ABC to’g’ri burchakli uchburchakda AB gipotenuza, AM va BN bissektrisalar. Agar AB = 16 va AM2 + BN2 = 320 bo’lsa, MN ning uzunligini toping.
25. Kasrning maxrajini irratsionallikdan qutqaring: ![](data:image/png;base64,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)
Тесты о математике 8-класс (спец)
1-вариант
1. Упростите: ![](data:image/png;base64,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)
A) –1 B) 3 C) D)
2. Найдите наибольшее значение выражения ,
если 5 ≤ x ≤ 9 и 4 ≤ y ≤ 11.
A) 9,125 B) 7,25 C) 6 D) 15,25
3. Вычислите x3y + xy3 , если x – y = 2 и xy = 4 .
A) 16 B) –16 C) 48 D) 72
4. Упростите выражение:
А) 6 С) 24 С) 2 D) 18
5. Сравните числа : , ,
А) a < b < c С) c < b < a С) c < a < b D) a < c < b
6. Составте квадратное уравнение , если его корни равны 2 и .
A) B)
C) D)
7. Найдите значение выражения:
A) 4 B) 4 – 2 C) 0 D) – 2
8. Найдите произведение корней уравнения .
A) 36 B) –36 C) 12 D) 144
9. Решите систему уравнений
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