5x + 5x + 5x + 5x + 5x = কত?

5^x + 5^x + 5^x + 5^x + 5^x = কত?

A 25x

B 5x+1

C 55x

D 25x

Solution

Correct Answer: Option B

5^x + 5^x + 5^x + 5^x + 5^x

=5^x(1+1+1+1+1)

=5^x.5

=5^x+1 (Base সমান হলে Power যোগ হয়)