A 34
B 32
C 31
D 30
Correct Answer: Option A
X2 + 1/x2 = (x – 1/x)2 + 2*x*1/x
= (x-1/x)2 + 2
= (2)2 + 2
= 4 + 2 = 6
আবার,
X4 + 1/x4 = (x2 + 1/x2)2 - 2*x2*1/x2
= 62 – 2
= 36 – 2
= 34
Download our app for free and access thousands of MCQ questions with detailed solutions