Prerequisite Skills VOCABULARY CHECK

40ANSWER

What is the least common denominator of and ?

1. 38

710

2. Which equation is a direct variation equation, x or x ?

y5 =

5y =

ANSWER y5 = x

Prerequisite Skills SKILL CHECK

3. What is the degree of the polynomial 4x – 2 + 5x2 ?

ANSWER 2

ANSWER –1

4. Identify the extraneous solution when solving x + 2 = x.

5. x2 –2x –15

Prerequisite Skills SKILLS CHECK

Factor the polynomial.

6. 2x2 –8x+6

(x – 5)(x + 3)ANSWER

2(x – 3)(x – 1)ANSWER

7. 9x2 – 25 (3x + 5)(3x – 5)ANSWER

8. 3x3 – 48x 3x(x + 4)(x – 4)ANSWER

Prerequisite Skills SKILLS CHECK

Add, subtract, multiply or divide.

9. +

13

34

ANSWER 1 112

10. – 78

25

ANSWER 1940

11. 59 × 35

13ANSWER

12.

3 10 ÷

6 25

1 1 4ANSWER

Prerequisite Skills SKILLS CHECK

Solve the equation or proportion.

13.

4x = 9 ANSWER 94

14.

= 35

x10 ANSWER 6

15.

x2 + x = 6 ANSWER – 3, 2

ANSWER 1316.

x – 9 = 2