Please tell me what I did wrong.
This is a question from my review packet.
The answer says it should be 2 with exponent 3/2
My attempt gives me this:
Your mistakes are in the third line. You can't just take the exponents out of the square root like that!!
Note that:
and .
So your problem becomes .
Now note that .
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Alternatively, note that .
So your problem becomes .