Answer and Step-by-step explanation:
Like terms are two terms within a mathematical expression that ends with the same variable and can be combined with each other, whether it'll be adding, subtracting, multiplying, or dividing.
With this information above, we can now answer our question.
4xy and 5x2y are not like terms because they do not have the same variable ending, the x and y are split within "5x2y" while x and y are together in "4xy." Due to it not being fit within the definition of like terms, they are not like terms.
2x + 3x
4y + 5y
These are like terms because they have the same variable ending.