Question

If x+y=7 and xy=2,find x^2-y^2.
Please be quick

Answer 1

Answer:

here is your answers

marks as brainlist plzzzzzz

Answer 2

Answer:

Hey there !

Thanks for the question !

Here's the answer !

( x + y )² = x² + y² + 2xy

=> x² + y² = ( x + y )² - 2xy

We are given that,

x + y = 7 ; xy = 10

=> x² + y² = ( 7 )² - 2 ( 10 )

=> x² + y² = 49 - 20

=> x² + y² = 29

Hence 29 is the required solution.

Hope my answer helped !