(a - 5)(x + a) = a2 - 25 হলে, x -এর মান কত?

A

5

B

- 5

C

25

D

- 25

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প্রশ্ন: (a - 5) (x + a) = a2 - 25 হলে, x -এর মান কত?

সমাধান: 
(a - 5) (x + a) = a2 - 25
বা, ax - 5x + a2 - 5a = a2 - 25 
বা, x (a - 5) = 5a - 25 
বা, x (a - 5) = 5 (a - 5)
বা, x = 5 (a - 5)/(a - 5) 
∴ x = 5 

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Updated: 1 month ago

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