Unit 2, Pretest on Polynomials and Rational Functions with Answers
Blackline Masters, Advanced MathPreCalculus
Page 43
Louisiana Comprehensive Curriculum, Revised 2008
1. Factor to find the roots in each of the problems below.
a.
x
2
– 5
x
– 14 = 0
Factors
_(x – 7)(x + 2)_
Roots
__7 and 2
_____
b. 2
x
2
– 13
x
+ 6 = 0
Factors
_(2x – 1)(x – 6)
Roots__
1/2 and 6
_____
2. Use the quadratic formula to solve 2
x
2
3
x
– 4 = 0
x
=
+
3
41
4
4
or
3
41
3. Find the discriminant and use it to describe the nature of the roots in each of the
following equations.
a. 2
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 Fall '08
 GERMAN
 Calculus, PreCalculus, Polynomials, Factors, Rational Functions, Quadratic equation, Prime number, real roots, Louisiana Comprehensive Curriculum

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