Question

if the product of 2 numbers is 40 their sum 20. show tht the sum of their reprocals is equal to 1/2

Answer 1

1/2.

x+y=20

xy=40

1/x+1/y=(x+y)/xy

=20/40

=1/2 ans

hope it will help you

Answer 2

1/2.

x+y=20

xy=40

1/x+1/y=(x+y)/xy

=20/40

=1/2 ans

hope it will help you

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