Question

If x2 + 1x2 = 47, find the value of x - 1x

Answer 1

Answer:

Hello users ......

we have given that

x² + 1/x² =47

we have to find

x + 1/x = ?

solution:-

we know that

x² +y² = (x+y)² -2xy

here

x² + 1/x² =47

=> 47 = (x + 1/x)² - 2 ×x×1/x

=> 47 +2 = (x+1/x) ²

=> 49 = (x + 1/x)²

=> x + 1/x = 7 answer