The number of integer (positive, negative or zero) solutions of xy ? 6(x + y) = 0 with x ? y is
(a) 5
(b) 10
(c)12
(d) 9

Dear student, 
Your question is not clear and seems to be incomplete. Wht the sign? Is representing is not clear. Kindly repost your question and please be a little specific so that we can provide you with meaningful solution. 
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