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Solve the equation 22x+1 + 4x = 48

A 1

B 2

C 3

D 4

Solution

Correct Answer: Option B

এখানে, 22x+1 + 4x = 48

অপশন (খ) হতে x = 2 হলে

বামপক্ষ = 22.2+1 + 42
           = 25 + 42
           = 32 + 16
           = 48

∴ x = 2 এর জন্য প্রদত্ত সমীকরণটি সত্য।

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