Final answer:
To determine which expressions are equivalent, we need to simplify each expression. The correct choices are a and b.
Step-by-step explanation:
To determine which expressions are equivalent, we need to simplify each expression. Let's take a look at the given choices:
a. 2x + 3y and 3y + 2x
These two expressions are equivalent because addition is commutative, meaning the order of the terms doesn't matter.
b. 4x - 2y and 2(2x - y)
These two expressions are equivalent because they both simplify to 4x - 2y after applying the distributive property.
c. 5x + (2y + 3z) and 5x + 2y + 3z
These two expressions are equivalent because the parentheses in the first expression can be removed since addition is associative.
Therefore, the correct choices are a and b.