7- sinf test. I variant. Hisoblang: A. B. C. D. E

b^2	2	-5a^2b^3
	-11,25

II – variant.

S	1	2	3	4	5	6	7	8	9	10	11	12	13
J	A	B	C	E	D	E	C	E	C	B	A	E	B
S	14	15	16	17	18	19	20	21	22	23	24	25
J	A	B	D	B				b^2	2	-5a^2b^3		-11,25

III – variant.

S	1	2	3	4	5	6	7	8	9	10	11	12	13
J	E	C	E	A	C	A	A	B	C	E	D	E	C
S	14	15	16	17	18	19	20	21	22	23	24	25
J	B	A	B	D				3a-1	-8	33;99	3	17a^2bc-3ab^2c

Yozma ish.

I variant

1. Qulay usul bilan hisoblang:
2. bo’lsa, ifodaning son qiymatini toping.

3. Ota katta o’g’liga tangalarning qismini, kichiko’g’liga esa qolgan tangalarning qismini berdi. Shundan so’ng otada 384 ta tanga qoldi. Dastlab unda qancha tanga bo’lgan?

4. Teng yonli uchburchakning uchidan asosiga bissektrisa o’tkazilgan. Shu bissektrisa ham mediana, ham balandlik bo’lishini isbotlang.

5. Teng yonli uchburchakning uchidagi burchagi 94⁰ ga teng. Asosidagi burchaklarining bissektrisalari kesishishidan hosil bo’lgan o’tkir burchakni toping.

Yozma ish.

II variant

1. Qulay usul bilan hisoblang:

2. bo’lsa, ifodani son qiymatini toping.

3. Asalarilarning oq gullarga, qizil gullarga qo’ndi. Ular ayirmasining 3 baravari sariq gullardan bol yig’ishmoqda. Faqat bittagina asalari gullar iforidan baxra olib , uchib yuribdi. Qani aytingchi, gulzorda qancha asalari bor?

4. Teng yonli uchburchakning asosidagi burchaklarning tengligini isbotlang.

5. Teng yonli uchburchakning uchidagi burchagi 30⁰ ga teng. Uning yon tomoniga tushirilgan balandligi bilan asosi orasidagi burchakni toping.
Yozma ish.

III variant

1. Qulay usul bilan hisoblang:

2. bo’lsa, ifodaning son qiymatini toping.

3. Asalarilarning oq gullarga, qizil gullarga qo’ndi. Ular ayirmasining 3 baravari sariq gullardan bol yig’ishmoqda. Faqat bittagina asalari gullar iforidan baxra olib , uchib yuribdi. Qani aytingchi, gulzorda qancha asalari bor?

4. Teng yonli uchburchakning uchidan asosiga bissektrisa o’tkazilgan. Shu bissektrisa ham mediana, ham balandlik bo’lishini isbotlang.

5. Teng yonli uchburchakning uchidagi burchagi 30⁰ ga teng. Uning yon tomoniga tushirilgan balandligi bilan asosi orasidagi burchakni toping.