Page 79 - Math Course 2 (Book 1)

Monomial Expressions: Division

Apply Properties of Exponents

Refer to the f gure. Write the ratio of the
circumference of the circle to the area of Read the Test Item
the square in simplest form. A ratio is a comparison of two
quantities. It can be written in
fraction form.
A. 2r B. 2π
π r r Solve the Test Item
• circumference of circle = 2 π r
C. π D. 2πr length of square = diameter of
2r 1 circle or 2rarea of square = (2r) 2
circumference of a circle 2 π r
•
area of a square (2r) 2
Answer C 2
Quotient of Powers = π r 1–2
4
1
Simplify = π r –1
2
π 1
= a –n = n
2r a

Your Turn!

Negative Exponents

a b –5a bc 6
–7
–2 3
Simplify Simplify
c –5 –25ab c
–2 –6
Assume that no denominator is equal to zero. Assume that no denominator is equal to zero.
b c a b c
8 3 12
3 5
A. A.
a 2 5
a b b 3
2 3
B. B.
c 5 5a 8
b c
3 12
2 3 5
C. a b c C.
5a 8
c a –b c
2 1
5 2
D. D.
b 3 5a 8
Answer Answer
5 8 3
Simplify 36x y z
9x y z
4
2 6
Assume that no denominator is equal to zero.
6 4
xy z
A.
4
27 xy 6

B.
z 3
4z 3
C.
xy 6
4xy 6
D.
z 3
Answer
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