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1. x + 1/x = 2 হলে, x5 + 1/x5 = কত?
- A. 2
- B. 2
- C. 2
- D. 2
Answer: Option A
Explanation:
x+1/x=2
বা, (x2+1)/ x=2
বা, x2+1=2x
বা, x2-2.x.1+12=0
বা, (x-1)2=0
বা, x=1
Now, x5+1/x5=15+1/15=1+1= 2
Post your comments here:
1. x + 1/x = 2 হলে, x5 + 1/x5 = কত?
Answer: Option A
Explanation:
x+1/x=2
বা, (x2+1)/ x=2
বা, x2+1=2x
বা, x2-2.x.1+12=0
বা, (x-1)2=0
বা, x=1
Now, x5+1/x5=15+1/15=1+1= 2
Post your comments here: