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1. a + b = 5  এবং  a − b = 3  হলে,  a 2 − b 2  এর মান কত?

  • A. 2
  • B. 2
  • C. 2
  • D. 2

Answer: Option D

Explanation:

best des
a^2 - b^2

= (a+b) (a-b)

= 5×3

= 15


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