1. y=x+1. multiply both sides by x -> xy=x(x+1). No info on x, insuff.
2. y=x^2+1. multiply both sides by x -> xy=x(x^2+1). No info on x, insuff.
Together, equating both statements -> x+1 = x^2+1 -> x = 0, 1
Substituting gives y = 1,2.
Two solutions for xy -> E.
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