Question

Ans bhai ji nhi ara hai bhai

Answer 1

Answer:

1. i.) (x+y) = x² + y² + 2xy

     =    5 = x² + y² + 2(6)

     =    5 = x² + y² +12

           5 - 12 = x² + y²

   So, x² + y² = -7

ii.) (x-y) = x² + y² - 2xy

        6 = x² + y² - 2(16)

        6 = x² + y² - 32

        6 + 32 = x² + y²

   So, x² + y² = 38

2. i.) (p+q) = p² + q² + 2pq

                 = 29 + 2(10)

                 = 29 + 20 = 39.

ii.) (p-q) = p² + q² - 2pq

                 = 29 - 2(10)

                 = 29 - 20 = 19.

3. i.) x + 1/x = 3

Squaring both sides:

(x + 1/x)² = 3²

x² + 1/x² + 2 = 9

x² + 1/x² = 9 - 2

x² + 1/x² = 7

ii.) x - 1/x = 4

Squaring both sides:

(x - 1/x)² = 4²

x² + 1/x² - 2 = 16

x² + 1/x² = 16 + 2

x² + 1/x² = 18

Step-by-step explanation:

Hope it helps :)