hey..I know a bit of croatian and i was wondering if there's a school (something like distance education..) where I could learn cro? i know there's saturday school,but I don't want to do it that way...
I'm doing french cont by Open High School,but I think they don't offer croatian..I would...
I'm not too sure either,but my teacher told me once this rule:
a^2+b^2=(a+b)(a+b)-2ab
so the answer to the previous question (a^4+4*b^4) could be:
(a^2+2*b^2)(a^2+2*b^2)-4*a^2*b^2
:)