Answer:
x+x refers to x being added
For Eg:
5+5=10
x+x refers to x being multiplied
For Eg:
5*5 = 25
So you can see that the product is greater than sum
Not always though,
For Example take 2+2=4
and 2*2 = 4
Interestingly 2^2 is also equal to 4
Hope this helps!