options: Interpret expressions that represent a quantity in terms of its context.

Use the structure of an expression to identify ways to rewrite it. For example, see x^(4) – y^(4 )as (x^(2))^(2 )– (y^(2))^(2), thus recognizing it as a difference of squares that can be factored as (x^(2 )– y^(2))(x^(2 )+ y^(2)).
problem_activity: Are the following two expressions equivalent? Explain your reasoning using the properties of operations. Provide examples to support your reasoning.
Expression 1:
$${(x-y)-z }$$
Expression 2:
$${x-(y-z)}$$


correct_option_index: 0

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