7-sinf Matematika 4-chorak

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OMAD YOR BO'LSIN!


7-sinf Matematika 4-chorak

Testni Mamadoliyev Diyorbek tayyorladi.

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Surati p va q sonlarining ayirmasiga, maxraji esa ularning ko`paytmasiga teng bo`lgan algebraik kasrni yozing.

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Agar uchburchakning burchaklari 2,3,4 sonlariga proporsional bo`lsa, ularni toping.

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To`rtburchak ichki burchaklari yig`indisi necha  gradusga teng ?

4 / 25

Amallarni bajaring: 12,42 + (4,234 - 2,42).

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Tenglamani yeching: 12x - 48 = 5x +1.

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Tenglik shaklida yozing: a va b sonlari yig`indisining ikkilangani ularning ko`paytmasiga teng.

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Har biri x so`mdan 12 ta daftar va har biri y so`mdan 2 ta ruchka sotib olindi. Hamma xarid qancha turadi ?

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Otasi 38 yoshda, o`g`li esa 12 yoshda. Necha yildan keyin otasi o`g`lidan ikki marta katta bo`ladi ?

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Algebraik ifodaning son qiymatini hisoblang: bunda,

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Agar bo`lsa,          BC ni toping. ?

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a sonni shunday tanlangki, 3x - 4 = a - 2x tenglama x = 1 ildizga ega bo`lsin

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Ifodani soddalashtiring:

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Teng yonli uchburchakning perimetri 48, yon tomoni 18 ga teng. Uning asosini toping

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Ko`phadning son qiymatini toping: x2 +2xy +y2, bunda x = 1,2, y = -1,2.

 

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Algebraik ifodaning qiymatini toping:, bunda a = 10, b = -5

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Ikki to`g`ri chiziqning kesishishidan hosil bo`lgan burchaklardan ikkitasining yig`indisi 1200. Bu burchaklarni toping

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Hisoblang:

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Umumiy ko‘paytuvchilarni qavsdan tashqariga chiqaring:    3xy-3xz

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Quyidagi kasrlar uchun umumiy mahrajni toping:

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Ifodani soddalashtiring va yig‘indini toping:

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Algebraik kasrlarni ayiring:

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Ko‘paytmani daraja shaklida yozing:

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a=20, b=15 bo‘lganda  algebraik kasrning son qiymatini toping?

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Kasrlarni qo‘shing:

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Quyidagi kasrlar uchun umumiy mahrajni toping:

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