Originally Posted by
brumby_3 Hi, I got this question wrong in an assignment I did and was wondering how you get the answer.
Expand and simplify (x-(1/3y)+(2/5z))^2?
The answer is apparantly x^2 + 1/9y2 + 4/25z^2 - 2/3xy + 4/5xz - 2/15yz But how do I get that?