9ˣ + 9ˣ + 9ˣ = কত?

A 27ˣ

B 3²ˣ⁺¹

C 9³ˣ

D 3x³

Solution

Correct Answer: Option B

9ˣ + 9ˣ + 9ˣ
=3.9ˣ
=3(3² )ˣ
=3.3²ˣ
=3¹ ⁺²ˣ
=3²ˣ ⁺¹


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