Question

if x+ 1 upon x =7 then find the value of x² + 1 upon x²​

Answer 1

Answer:

x²+1/x² = 47

Explanation:

x+1/x = 7 -----(1)

x²+1/x²

= (x+1/x)² - 2

= 7² - 2

= 49 - 2

= 47

••••

Answer 2

Answer:

Step-by-step explanation:

x²+1/x² = 47

Explanation:  

Given

x+1/x = 7 -----(1)

x²+1/x²    =x²+1/x² +2x[1/x] - 2x[1/x]  

x²+1/x²    = (x+1/x)² - 2

                 = 7² - 2

                   = 49 - 2

                        = 47