Question 1052973
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<U>Answer</U>.  11 and 7.


<U>Solution</U>


<pre>
{{{x^2 - y^2}}} = 72  --->

(x-y)*(x+y) = 72.

But x-y = 4, according to the condition. Hence,

4*(x+y) = 72  --->

x + y = {{{72/4}}} = 18.

So, you have two equations:

x + y = 18,
x - y =  4.

Add them.

From this point, please complete the solution on your own.
</pre>