Pre-Algebra Demystified

SOLUTION

15x^5


5x^3

¼
3x^5 
^3 ¼
3x^2

EXAMPLE

Divide 12x^4 y^6 by 3xy^4.

SOLUTION

12x^4 y^6

3xy^4

¼4x^4 
^1 y^6 
^4 ¼4x^3 y^2

Math Note: x^0 ¼1(x6¼0).

EXAMPLE

Divide 18x^3 y^2 z^4 by 3xy^2 z^3.

SOLUTION

18x^3 y^2 z^4

3xy^2 z^3

¼6x^3 
^1 y^2 
^2 z^4 
^3 ¼6x^2 z

PRACTICE

Divide:

1. 36m^3 n^4 9m^2 n


2. 
   40x^5 y^4 z^5 8x^3 y^2 z^2


3. 15a 3


4. 49a^4 b^5 (
   7ab^4 )


5. 
   21c^4 d^2 (
   7cd)

ANSWERS

1. 4mn^3


2. 
   5x^2 y^2 z^3


3. 5a


4. 
   7a^3 b


5. 3c^3 d

246 CHAPTER 12 Monomials and Polynomials