1. Lesson 8­3.notebook April 11, 2013
Assignment:
1­­>L8.3, pg. 489, #2 ­ 28 (evens) ­ Due Monday [4/15] ....not checking...
2­­>Chapter 7 Test signed for extra credit

2. Lesson 8­3.notebook April 11, 2013
Lesson 8.3 WarmUp:
Factor each monomial completely.
1) 16x3y2
2) ­20m5n2
Find the GCF of each set of monomials.
3) 10a ­
20a2 ­
25a
4) 13c ­ 5) 21ab ­
25d ­ 35a ­
56ab3

3. Lesson 8­3.notebook April 11, 2013
Lesson 8.3:
*To factor trinomials in the form of x2 + bx + c, find 2 integers with a
sum of b and a product of c.
ex ­­>x2 + 6x + 8
factors sum of factors

4. Lesson 8­3.notebook April 11, 2013
*A quadratic equation is: ax2 + bx + c = 0 and can be solved
by factoring and then using the zero property.
ex ­­> x2 + 6x = 27
factors sum of factors

5. Lesson 8­3.notebook April 11, 2013
Lesson 8.3 examples:
Factor each polynomial.
A) x2 + 14x + 24
B) x2 + 4x ­ 21

6. Lesson 8­3.notebook April 11, 2013
C) x2 + 8x ­ 48
D) x2 ­ 17x + 72

7. Lesson 8­3.notebook April 11, 2013
E) x2 ­ 16x + 48
F) ­42 ­ x + x2

8. Lesson 8­3.notebook April 11, 2013
Solve each equation. Check your solutions.
G) x2 + x = 20
H) x2 + 56 = ­18x

9. Lesson 8­3.notebook April 11, 2013
I) Mr. Lochmann wants to put in a rectangular pool and he wants to include a
24­foot fence around the pool. The pool requires a space of 36 square feet. What
dimensions should the pool have?