Question #76b19

1 Answer
EZ as pi
Sep 18, 2016

#4y^2#

Explanation:

It is generally easier to find the HCF and LCM of variables because they are already given in factor and index form.

We can see that thre is #y^2# in each.

As for the numbers, 8 does not divide into 20, but 4 is a factor of 8 and of 20.

There are several common factors, but the Highest common factor is

#4y^2#

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