A binary operation ?� on real numbers is defined by x? y = xy + x + y for any two real numbers x and y. The value of ( -3/6) ? 6 is

This question A binary operation ?� on real numbers is defined by x? y = xy + x + y for any two real numbers x and y. The value of ( -3/6) ? 6 is is a jamb, neco, waec maths question.

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