Question

if x+y=4,xy=3,find 1/y^2+1/x^2​

Answer 1

Answer=22

Step-by-step explanation:

Answer 2

Answer:

(x + y) = 4(x+y)=4

xy = 3xy=3

So ,

(x + y)² = 4²(x+y)²=4²

(x² + y²) + 2xy = 16(x²+y²)+2xy=16

(x² + y²) + 6 = 16(x²+y²)+6=16

(x² + y²) = 10(x²+y²)=10

Now ,

1/y^2 + 1/x^2

=x^2+y^2

x^2y^2

=10

9