GRE
$$y^{x}$$
$$y^{x}+1$$
CD
DB
A diagonal of a cube with edge 5
A diagonal of a rectangular prism with sides 3, 4, and 5
2b
a+b+c
6x
2yz
x
$$\frac{1}{4}$$
u(★3)
★(u3)
The ratio of freshmen to juniors
0.3
$$4x^{2}+1$$
$$(2x+1)^{2}$$
a
b
The percent of type S cars that do not contain anti-theft devices.
45%
25000 +道题目
5本备考书籍