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Transcript 
You used the laws of exponents to find
products and quotients of monomials.
• Evaluate and rewrite expressions involving
rational exponents.
• Solve equations involving expressions with
rational exponents.
• rational exponent
• cube root
• nth root
• exponential equation
Radical and Exponential Forms
Write each expression in radical form, or write each
radical in exponential form.
=9
Answer: 9
Simplify.
Radical and Exponential Forms
Write each expression in radical form, or write each
radical in exponential form.
Answer:
Radical and Exponential Forms
Write each expression in radical form, or write each
radical in exponential form.
Answer:
Radical and Exponential Forms
Write each expression in radical form, or write each
radical in exponential form.
Answer: 9
A. 16
B. 8
C. 4
D. 2
nth Roots
A.
Answer: 4
nth Roots
B.
Answer: 5
A. 343
B. 81
C. 49
D. 7
Evaluate b
Expressions
A.
= 11
Answer: 11
Simplify.
Evaluate b
Expressions
B.
=7
Answer: 7
Simplify.
A. 4
B. 8
C. 16
D. 32
Evaluate b Expressions
= 22
25 = 32
=4
Simplify.
Answer: 4
Evaluate b Expressions
= 95
92 = 81
= 59,049
Simplify.
Answer: 59,049
A. 216
B. 36
C. 18
D. 6
Solve Exponential Equations
A. Solve 9x = 729.
9x = 729
Original equation
9x = 93
Rewrite 729 as 93.
x =3
Answer: 3
Power Property of equality
Solve Exponential Equations
B. Solve 162x – 1 = 8.
162x – 1 = 8
(24)2x – 1 = 23
28x – 4 = 23
8x – 4 = 3
8x = 7
Original equation
Rewrite 16 as 24 and 8 as 23.
Power of a Power, Distributive
Property
Power Property of Equality
Add 4 to each side.
Divide each side by 8.
Answer:
Solve 93x + 1 = 274.
A.
B.
C.
D. 2
Solve Exponential Equations
BIOLOGY The population p of a culture that begins
with 40 bacteria and doubles every 8 hours can be
modeled by
, where t is time in hours. Find
t if p = 20,480.
Original equation
p = 20,480
Divide each side by 40.
Solve Exponential Equations
Rewrite 512 as 29.
Power Property of Equality
72 = t
Answer: 72
Multiply each side by 8.
NEWS The number of hits to a news story online
can be modeled by
hours. Find t if h = 24,576.
A. 6
B. 8
C. 9
D. 12
, where t is time in
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