Question

solve it plz, find the value of at least no. 1 anybody plz​

Answer 1

Step-by-step explanation:

Given: x² + 1/x = 2 (1/2)

⇒ x + (1/x) = 5/2

Now,

(i)

(x - 1/x)² = (x + 1/x)² - 4

⇒ (x - 1/x)² = (5/2)² - 4

⇒ (x - 1/x)² = (25/4) - 4

⇒ (x - 1/x)² = (25 - 16)/4

⇒ (x - 1/x)² = 9/4

⇒ (x - 1/x) = 3/2

(ii)

x³ - (1/x³) = (x - 1/x)³ + 3(x - 1/x)

               = (3/2)³ + 3(3/2)

               = (27/8) + 9/2

               = 63/8

Hope it helps!

Answer 2

Answer:

Step-by-step explanation: