GRE
The sum of the squares of the five integers $$x_1, x_2, x_3, x_4$$, and $$x_5$$
The sum of the squares of the five integers $$x_1+1, x_2, x_3, x_4$$, and $$x_5-1$$
The length of line segment $$OC$$
The length of line segment $$OP$$
$$x_9$$
$$(2^{13})x_{22}$$
25000 +道题目
269本备考书籍