Question 1042995
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Prove that, if d is a factor of x,and d is also a factor of y
where d>=1,x>=1,y>=1 ∈ Z
then d^2 is a factor of x multiplied by y
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<pre>
From the condition, a = nd  and  b = md  with some integers  n  and  m.

Then ab = nd*md = nm*d^2.


Proved.
</pre>

And solved.