Question

If x - y = 7 and xy = 9 , find
2. 2
value of x y​

Answer 1

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Answer 2

Answer:

x-y=7

x=y+7

given xy=9

         (y+7)y=9

          y^2+7y-9=0

           y=(-7+under root 13)/2  ,  y=( -7 - under root 13)/2

         

then substitute y value in x=y+7

u will get x and y

Step-by-step explanation: