Page 493 - Algebra 1

Lesson Practice
Factor each trinomial.
a.
(Ex 1)
c.
(Ex 2)
e.
(Ex 3)
g.
(Ex 4)
i.
(Ex 5)
b. x2 -10x+16 (Ex 1)
x2 +3x+2
x2 +4x-12
x2 +9xy+20y2
12x+20+x2
Evaluate x2 + x - 6 and its factors for x = 4.
d. x2 -5x-36 (Ex 2)
f. x2 -xy-12y2 (Ex 3)
h. 7x+x2 -44 (Ex 4)
Practice
Distributed and Integrated
1. Solve the inequality x + 2 + 3 > 6. Then graph and check the solution. (66)
Find the probability of the following events.
2. choosing a vowel or a consonant from the alphabet
(68)
3. rolling a sum that is a multiple of 4 or a set of doubles with two number cubes (68)
Factor.
*4.
(72)
*6.
(72)
*8.
(72)
x2 +11x+24 m2 +9m+20
*5. k2 -3k-40 (72)
*7. x2 +33+14x (72)
Student A
(-6)(1) = -6 (-6) + 1 = -5
x2 - 5x - 6 = (x + 1)(x - 6)
Student B
(-6)(-1) = -6 (-6) - (-1) = -5
x2 - 5x - 6 = (x - 1)(x - 6)
*9.
(72)
*10.
(72)
Error Analysis Two students are factoring the following trinomial. Which student is correct? Explain the error.
x2 -5x-6
Baking The area of the sheet-cake pans at a bakery are described by the trinomial x2 + 15x + 54. What are the dimensions of a pan if x = 11?
Analyze How many possible pairs of number factors does c have in the following trinomial?
x2 +bx+36
478
Saxon Algebra 1