GRE
$$x^2+y^2$$
$$1$$
x
y
The average (arithmetic mean) of $$a^2$$, $$b^2$$ and $$c^2$$
The median of $$a^2$$, $$b^2$$ and $$c^2$$
The area of a triangle with a perimeter of 40 and a side whose length is 12
72
$$y$$
5
25000 +道题目
200本备考书籍