Eqn 11.9 and 11.10 on Pg 145, In the Kernel K Means section

[superhans]

I'm not sure if you read these, but Eqn 11.9 has a "square of the l2 norm" , i.e., ||a - b||^2 form. But Eqn 11.10, expands it as ||a||^2 + ||b||^2 + aT b, whereas usually, it is ||a||^2 + ||b||^2 - 2aT b

So is the -2 being absorbed inside (it doesn't look like it) ?