Unit 3 Review

Combine Like Terms

100

Simplify by combining like terms.

4x + 9y - 2x

2x + 9y

or

9y + 2x

200

Simplify by combining like terms.

13d - (-12d) + 4e - 5e

25d - 1e

or

25d - e

300

Simplify by combining like terms.

x² + 4x - 7x - 8x² + 20 -7

-7x² - 3x + 13

400

Simplify by combining like terms.

-3x³ + 2y² - x³ + 8 - 9y² + 5

-4x³ - 7y² + 13 

500

Simplify by combining like terms.

4z - 3y - 2z + 33 + 6x - x + 8z - 5y - 32

10z - 8y + 5x + 1

Distribute

100

Simplify by distributing and combining like terms (if possible).

2(3x - 5)

6x - 10

200

Simplify by distributing and combining like terms (if possible).

-5(x - 7)

-5x + 35

300

Simplify by distributing and combining like terms (if possible).

3(2h - 3k) + 4h

10h - 9k

400

Simplify by distributing and combining like terms (if possible).

-7(2p - 2r) + 3p - 4r

-11p + 10r

500

Simplify by distributing and combining like terms (if possible).

-5(x - 7) - 9(4 - x)

4x - 1

Variable Substitution

100

If x = 9, evaluate

2x - 4

15

200

If x = -3, evaluate

-4x + 5

17

300

If x = 2 and y = 4, evaluate

3x - 2y

-2

400

If x = -7 and y = 3, evaluate

4(x + 2y)

-4

500

If x = 5, evaluate

x² - 3x + 6

16

Everything!

100

If x = -3, evaluate

2x - 6 + 3x

-21

200

If x = 4 and y = 1, evaluate

2(x + y) + 3y

13

300

Given x = 2, y = -3, z = 5, evaluate:

-4x + 3y + 4z - 2z

-7

400

Given x = 2, y = -3, z = 5, evaluate:

2(5 - y - 6x + 2z)

12

500

If x = -1 and y = -2, evaluate

-4(2x - 4y) + 15y

-54