1.

(x^2+1)(y^2+1) + 9 = 6 (x+y) find x^2+y^2

Answer»

Answer:

6(x+y) – 9

Step-by-step EXPLANATION:

(x^2+1)(y^2+1)+ 9 = 6 (x+y)

or, (x²+1)(y²+1) = 6(x+y) – 9



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