Question

x^2+1/x^2=7. Find x+1/x.​

Answer 1

Step-by-step explanation:

Identity: x² +1/x² = (x+1/x)²-2

given: x²+1/x² = 7

Therefore ,

According to question :

7=(x + 1/x)²-2

x+1/x =√7+2

x+1/x =√9

x+1/x = 3

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