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Paspulati Leelaram

· started a discussion

· 1 Months ago

why x4+1/x4 is used instead of x4-\/x4 (Question:94427.0)

question is given as - instead of + in x4+1\x4

Question:
If \(\left (x^4 +\cfrac {1}{x^4} \right )\)=119,  then  value of \(\left ( x^3-\cfrac {1}{x^3} \right )\)  is :
Options:
A) 49
B) 27
C) 36
D) 63
Solution:

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