Question

find 20x 9. of y. .
please help me please pl
$|422|$
ease​

Answer 1

Answer:

Answer

x+y=9

(x+y)

2

=9

2

x

2

+y

2

+2xy=81

x

2

+y

2

=81−2(20)

x

2

+y

2

=41