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Four of the term cards are like terms. Which card is the odd one out?

Class 7Like and Unlike TermsAlgebra

A $7 nm$
B−mn
C $- 9 mn$
D $3 m^{2} n$

Step-by-Step Solution

Like terms have exactly the same letters with the same powers.

4 mn, - mn, 7 nm, - 9 mn

all have

mn (nm = mn) .3 m^{2} n

has

m^{2} n

, so it is unlike the others.

Answer: D)

3 m^{2} n

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