Quiz Review

Combining Like Terms

100

x - 7 + 8x

9x - 7

200

2x + 8 - x - 9

x - 1 or x + -1

300

-4x + 17 - 2x - 5

-6x + 12 

400

-x - y + 3x - z

2x - y - z or 2x + -y + -z

500

-3x + 7y - 8z + 5x - 5y - 5z

2x + 2y - 13z or 2x + 2y + -13z

Orders of Operations

100

(6 x 2) + 3

15

200

2(12/3 + 4)

16

300

(-11 + 1 - 4) / -7

2

400

(6 + 4 - 2)² / 8

8

500

((8(4/2))/8)² / 2

2

Vocabulary

100

Define Variable 

Variable is a placeholder, generally a letter. 

200

Define Distribute

To give out... In math, mainly used for multiplication. 

300

Define Expression

NO EQUAL SIGN. 

400

Define Simplify

To break down, get an expression to the smallest form. 

500

Define Reciprocal 

The opposite, flipped

Distributive Property

100

2(2x + 4)

4x + 8

200

-3(-2x + 3)

6x - 9 or 6x + -9

300

-9(2x - 3z)

-18x + 27z or -18x + 27z

400

6(x - y + 7)

6x - 6y + 42 or 6x + -6y + 42

500

-5(-2x + -3y - 5z)

10x + 15y + 25z

Evaluating Expressions

100

x + y - z ; use x = 2, y = 2, z = 1

3

200

m(m + p) ; use m = 3, p = 2 

15

300

h + 3j ; use h = 2, j = 2

8

400

3x(x + y) ; use x = 2, y = 6

48

500

2x + 3jz ; use x = 2, j = 2, z = 3

22