যদি x= 2 - √3 হয়, তবে x² এর মান কত?

A 1

B 7-4√3

C 2+3√3

D 1/(2- √3)

Solution

Correct Answer: Option B

এখানে,
x= 2 - √3
=> x2=(2-√3)2
x2 = 22 - 2.2.√3 + (√3)²
∴x²= 7 - 4 √3

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