Question

1) Find the value of x² +1/x², if x =1/x =7.

Answer
47
(x 1/x)² = 7²

= x² + (1/x)² + 2× x ×1/x =49
=x² + 1/x² + 2 = 49
=x² + 1/x² =49 - 2 =47

x² + 1/x² = 47 Answer

Hope it help u

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Answer 1

Answer:

x2+(1/x)2 +2*1*/x=49

x2+1/x2 +2 =49

x2+1/x2,49-2=47

x2+1/x2=47