GRE

x

$$x^{3}$$

$$(\frac{2^{3}}{3^{2}})^{4}$$

$$(\frac{2^{-3}}{3^{-2}})^{-4}$$

y

The area of circle C

π

In the xy -plane, the slope of the line containing the points (a, b) and (0, 2)

In the xy -plane, the slope of the line containing the points (a, b) and (2, 0)

n

1

The standard deviation of the 3 numbers x, x+1, and x+70

The standard deviation of the 3 numbers x+ 10, x+11, and x+80

The total price of n of the 8 books (n > 0)

($1.55)n

The price of commodity X at the beginning of last year

The price of commodity X at the end of last year

|a+b|

|a-b|

25000 +道题目

5本备考书籍