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