ii chorak. 7 sinf 4-bsb algebra umumtalim i variant

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sinf _______ ismi, familiyasi _____________________ sana _____ 7 sinf algebradan 4 – bsb savollari i variant 1.ikkihad yig‘indisining kubi shaklida yozing: (5 ball) 𝑥3 + 9𝑥2𝑦 + 27𝑥𝑦2 + 27𝑦3 javob: _______________________________________________ 2. ifodani soddalashtiring: (5 ball) (2𝑎 + 3𝑏)3 − (2𝑎 − 3𝑏)3 javob: _______________________________________________ 3.ko‘phadni ko‘paytiruvchilarga ajrating. (5 ball) 15𝑎2 + 20𝑎𝑏 + 3𝑎𝑐 + 4𝑏𝑐 javob: _______________________________________________ 4. tenglamani yeching: (5 ball) (3 + 4𝑥)(9 − 12𝑥 + 16𝑥2) = 64𝑥3 + 9𝑥 javob: _______________________________________________ 5. hisoblang: (5 ball) 673 + 473 67 + 47 − 67 ∙ 47 javob: _______________________________________________ o‘quvchining to‘plagan balli: __________ tekshiruvchi o‘qituvchi: _________________ ___________ (imzo) baholash mezoni № ball javob deskriptor 1 5 (𝑥 + 3𝑦)3 1) 𝑥3 + 9𝑥2𝑦 + 27𝑥𝑦2 + 27𝑦3 = = 𝑥3 + 3(𝑥)23𝑦 + 3𝑥(3𝑦)2 + (3𝑦)3 formulaga keltirsa, 2 ball; 2) 𝑥3 + 3(𝑥)23𝑦 + 3𝑥(3𝑦)2 + (3𝑦)3 = (𝑥 + 3𝑦)3 ikki hadning yig‘indisini …

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67 ∙ 47 + 472 − 67 ∙ 47 = (67 − 47)2 = 400 ifodaning qiymatini topsa, 5 ball jami: 25 ball

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sinf _______ ismi, familiyasi _____________________ sana _____ 7 sinf algebradan 4 – bsb savollari i variant 1.ikkihad yig‘indisining kubi shaklida yozing: (5 ball) 𝑥3 + 9𝑥2𝑦 + 27𝑥𝑦2 + 27𝑦3 javob: _______________________________________________ 2. ifodani soddalashtiring: (5 ball) (2𝑎 + 3𝑏)3 − (2𝑎 − 3𝑏)3 javob: _______________________________________________ 3.ko‘phadni ko‘paytiruvchilarga ajrating. (5 ball) 15𝑎2 + 20𝑎𝑏 + 3𝑎𝑐 + 4𝑏𝑐 javob: _______________________________________________ 4. tenglamani yeching: (5 ball) (3 + 4𝑥)(9 − 12𝑥 + 16𝑥2) = 64𝑥3 + 9𝑥 javob: _______________________________________________ 5. hisoblang: (5 ball) 673 + 473 67 + 47 − 67 ∙ 47 javob: _______________________________________________ o‘quvchining to‘plagan balli: __________ tekshiruvchi o‘qituvchi: _____________...

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