যদি m + n = x এবং mn = 6x2 হয়, তবে m3 + n3 = কত? 

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A

- 27x2 

B

18 

C

19x3

D

 - 17x3

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Updated: 2 months ago

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যদি x + y + z = 16 এবং x2 + y2 + z2 = 62 হয়, তাহলে xy + yz + zx এর মান কত? 

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B

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x + y = 7 এবং xy = 10 হলে, (x - y)2এর মান কত?

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