Question

(2x,x+y)=(y,9),find the value of x and y.please give full process​

Answer 1

Answer:

Step-by-step explanation:

x+y=9

On squaring both sides ,

x  

2

+y  

2

+2xy=81

Putting value of xy = 14

x  

2

+y  

2

+28=81

x  

2

+y  

2

=81−28=53............(i)

(x−y)  

2

=x  

2

+y  

2

−2xy

Putting xy = 14 and (i)

(x−y)  

2

=53−2(14)=53−28

(x−y)  

2

=25

⇒x−y=±  

25

​  

=±5

Answer 2

Step-by-step explanation:

9

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