Algebra

Question 1

r + s =

Answer 1

s + r

Question 2

(r + s) + t =

Answer 2

r + (s + t)

Question 3

r ( st ) =

Answer 3

rs ( t )

Question 4

r ( s + t ) =

Answer 4

rs + rt

Question 5

Percent change =

Answer 5

( Difference / Original ) x 100

Question 6

ca + cb =

Answer 6

c(a + b)

Question 7

ca - cb =

Answer 7

c(a - b)

Question 8

(a + b)^2

Answer 8

a^2 + 2ab + b^2

Question 9

(a - b)^2

Answer 9

a^ - 2ab + b^2

Question 10

a^2 - b^2

Answer 10

(a+b)(a-b)

Question 11

(a+b)^3

Answer 11

a^3+3a^2b+3ab^2+b^3

Question 12

(a-b)^3

Answer 12

a^3-3a^2b-3ab^2-b^3

Question 13

a^-1

Answer 13

1/a

Question 14

(x^a)(x^b)

Answer 14

x^a+b

Question 15

(x^a)/(x^b)

Answer 15

x^a-b

Question 16

x^0

Answer 16

1

Question 17

0^0

Answer 17

Undefined

Question 18

(x^a)(y^a)

Answer 18

(xy)^a

Question 19

(x/y)^a

Answer 19

(x^a)/(y^a)

Question 20

(x^a)^b

Answer 20

x^ab

Question 21

Quadratic Formula

Answer 21

x = (-b +/- (b^2 - 4ac)^1/2)/2a

Question 22

Slope form

Answer 22

y = mx+b

Question 23

Distance formula

Answer 23

((x-x)^2 + (y-y)^2))^1/2

Question 24

Circle formula

Answer 24

(x-a)^2 + (y-b)^2 = r^2

Question 25

Center of circle

Answer 25

(a, b)

Question 26

Triangle inequality

Answer 26

|r+s|

Question 27

|r| |s|

Answer 27

|rs|

Question 28

r^2 if r>1

Answer 28

>r

Question 29

s^2 if 0

Question 30

Rate formula

Answer 30

d = r/t

Question 31

Simple interest formula

Answer 31

V = P(1+rt/100)

Question 32

Compound interest formula

Answer 32

V = P(1+r/100)^nt

GRE Quantitative Reasoning (4 decks)

• Arithmetic
• Algebra
• Geometry
• Data Analysis