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When you do (7x)2, you square both numbers.

So 7 squared=49 and x squared=x2

Your answer should be 49x2

Let's try another example: 2(3xy)3

Now we cube each number in the parentheses. 2(33x3y3)=2(27x3y3)

Finally you multiply the 2 and the 27. 54x3y3

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12y ago

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