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jenny508
Multiply.Use the distributive property. A) (3x+2y-1)(xy)
Distributive property: a(b+c)=ab+ac, or to make it look more like your problem: (a+b+c)d = ad+bd+cd. It's called "distributive, because the multiplication with d distributes over every term between the brackets.
@jenny508: Let me help you a bit further: (3x+2y-1)(xy) = 3x*xy + ...