Grade 7 - Unit 7 Test Review

Like terms

100

4a - 2b + 5 - a + 1

3a - 2b + 6

200

3z + 2xz - 5z + xz

-2z + 3xz

300

4a² - 3a + a² - 5a

-8a + 5a²

400

3z²y² + 5zy - 6z + 2 - 8z + 15 - 6z²y² - zy

-3z²y² + 4zy - 14z + 17

Distributive PropertyMultiplication

100

4(3x - 6)

12x - 24

200

5(-6x - 3y)

-30x - 15y

300

4(4x - 10 + 3z - w)

16x - 40 + 12z - 4w

400

-3(2x² + 4x - y² - 2)

-6x² - 12x + 3y² + 6

Distributive PropertyAddition/Subtraction

100

(x + 3) + (3x + 9)

4x + 12

200

(2x - 3) - (5x - 1)

-3x - 2

300

(-7x - 1) - (-3x - 5)

-7x + 3x -1 + 5

-4x + 6

400

3(2x + 5) - 4(x - 1)

6x + 15 - 4x + 4

2x + 19

Factoring Expressions

100

15x + 30

15(x + 2)

200

(9 + 12z)

3(3 + 4z)

300

2a + 4y + 10b - 22z

2(a + 2y + 5b - 11z)

400

18x + 40xy - 32y - 14xyz + 2z

2(9x + 20xy - 16y - 7xyz + z)

FOIL

100

(x + 2)(x + 1)

x² + 3x + 2

200

(x + 9)(x - 9)

x² - 81

300

(3x - 9)(-5x + 4)

-15x² + 12x + 45x - 36

-15x² + 57x - 36

400

(-15z - 12)(-2z - 1)

30z² + 15z + 24z + 12

30z² + 39z + 12