Answer:
The correct options are 1, 2 and 3.
Explanation:
The given expression is
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We need to find the expressions which are equivalent to the given expression.
Using multiplication the given expression can written as

So, option 1 is correct.
Using the Associative property of multiplication the given expression can be rewritten as
![[\because (ab)c=a(bc)]](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8kzwg6m6uq3yt0aahnfv2go01pymev0697.png)
Using the commutative property we get
![[\because ab=ba]](https://img.qammunity.org/2020/formulas/mathematics/middle-school/9l2233e7dh172l5jps356w8e05xwknbsi0.png)

Options 2 and 3 are correct.
Therefore, the correct options are 1, 2 and 3.