本文为大家介绍的GRE数学复习考点是“Subtracting Monomials”。
新版GRE数学复习重要考点：Subtracting Monomials
To subtract a monomial from another of the same variables just subtract the coefficients. Only two like monomials can be subtracted from each other.
Example:
By subtracting 3x from 4x, we get (4-3)x=x.
By subtracting 3xy from 2xy, we get (2-3)xy=-xy.
By subtracting bx from ax, we get ax-bx=(a-b)x.
Remember:
Monomials can be subtracted only if they have the same variables with identical powers.
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