Question

the ordered pair satisfying x - y = 7 is​

Answer 1

Answer:

7,0 is answer

Step-by-step explanation:

is it helps you

Answer 2

Answer:

x 2 +1=y and y 2 +1=x

Subtracting x 2 −y 2 =y−x

⇒(x−y)(x+y+1)=0

⇒x=y or x+y+1=0

If x=y then x 2 +1=y

⇒x 2 −x+1=0 which has no real roots.

If x+y+1=0 then x+y=−1

Adding given equations, x 2 +y 2 +2=x+y

⇒x 2 +y 2 +2=−1

⇒x 2 +y 2 +3=0 which is not possible.

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