



 
Hi Jana, Terms are pieces of the expression separated by plus or minus signs. Like terms are terms that have the exact same variable parts, that is the same variables raised to the same powers. Thus in the expression
the terms are + 2x, + y,  x and + 4y. The like terms are
So in this expression there are two kinds of like terms, the x terms and the y terms. In this expression
there are three kinds of like terms, x terms, y terms and xy terms, so the like terms are
In each of the three expressions in your question there is only one kind of like terms. There is a nice page on like terms on the Purple Math site. Penny  


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