what is b squared plus b squared

what is b squared plus b squared

$$\\ \small{\text{ I. $ b^2+b^2=b^2(1+1)=b^2*2= 2*b^2 $ }}$\\$ \small{\text{ II. $ b^2+b^2=b*(b+b)=b*(2*b)= 2*b^2 $ }}$$

b2= bxb

The answer???

Sorry but I don't know that. :/

$${{\mathtt{b}}}^{{\mathtt{2}}}{\mathtt{\,\times\,}}{{\mathtt{b}}}^{{\mathtt{2}}} = {{\mathtt{b}}}^{{\mathtt{4}}}$$

b^2+b^2=2b^2

b^2 + b^2= 2b^2

Now if it was b^2 * b^2 = b^(2+2) = b^4

Hope this helped.