1. Mertsj

Not unless we see the problem.

2. anonymous

$\sqrt[4]{405}x ^{3}y ^{2}$

3. anonymous

all under the fourth root sign

4. Mertsj

Try to find a perfect fourth power that is a factor of 405

5. Mertsj

They are 2^4=16 3^4=81. Try 81

6. Mertsj

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