Question

pls tell answer please both​

Answer 1

11.

Let the number be x.

Given, x + 1/x = 4

Now, squaring both sides, we get

(x + 1/x)² = 4²

or, (x - 1/x)² + 4 * x * 1/x = 16

or, (x - 1/x)² + 4 = 16

or, (x - 1/x)² = 12

or, x - 1/x = √12

or, x - 1/x = 2√3

• Option D) 2√3 is correct.

12.

Now, x² + y² = (x - y)² + 2xy

= 5² + 2 × 24

= 25 + 48

= 73

• Option B) 73 is correct.

Answer 2

Answer:

12.is b 73

I think this answer will help you