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1. a = 2, b = 3 হলে 2a + 4b এর সাথে 2a2 +a - b যোগ করলে যোগফল কত হবে?

  • A. 15
  • B. 15
  • C. 15
  • D. 15

Answer: Option D

Explanation:

2a+4b+2a^2+a-b

=2.2+4.3+2.2^2+2-3

=4+12+8-1

=23


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