GRE
The greatest possible number of lots minus the least possible number of lots
x
20
|$$m$$| - |-$$k$$|
|$$k$$| - |-$$m$$|
k
0
$$x^{2}$$
9
The number of square feet in 1 acre
40,000
$$x^{-3}$$+$$y^{-3}$$
$$(x+y)^{-3}$$
$$(\frac{2}{3})^{n}$$$$(\frac{3}{2})^{-n}$$
1
$$\frac{\sqrt{a}}{\sqrt[3]{b}}$$
25000 +道题目
236本备考书籍