Correct Answer: B
Explanation:
To identify the equivalent expression first identify the different terms that are in the given expression.
(2x+7)(2x+7)(2x+7)
Term One=(2x+7)(2x+7)(2x+7)
Since there are numerous quantities in term one that are the same, the term can be written in exponential form.
Now, recall the general form for exponents.
a2=a⋅a(ax)3=ax⋅ax⋅ax
Term one and an equivalent expression can be written as,
(2x+7)3