1(√3 + √2) = কত ?

A √3+√2

B 3 -√2

C √3 - √2

D √3 + 2

Solution

Correct Answer: Option C

লব ও হরকে (√3 - √2) দ্বারা গুণ করে পাই,
= 1 × (√3 - √2)(√3 + √2)(√3 - √2)
= (√3 - √2){(√3)2 - (√2)2} [সূত্র: (a+b)(a-b) = a2 - b2]
= (√3 - √2)(3 - 2)
= (√3 - √2)1
= √3 - √2

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