what is 2x times x?
2x*x= 2x^2
Since we do not have a value for x, we simply have 2x2(for those who can't see the formatting, 2x^2). Why? Take 2*2. What is 2*2? 4! But it is also the same as 22( or 2^2). Since we don't know x, we can simply write it as x2(or, as you know, x^2).