For any nonzero number a,
Zero Exponent
a0  1
Example 2: Simplify each expression.
a)
c)
b4
b4
b)
𝑏5 𝑐 6 𝑓8
2𝑐 3 𝑑 5
For and nonzero number a and any integer n,
an 
1
an
Example 3: Simplify each expression.
a) x 2
c)
𝑥7𝑦3
𝑥3𝑦5
0
d) ( 2 )
3𝑐 𝑑
𝑏5 𝑐 3 𝑓5
Negative
Exponents
x3 y 4 z
xyz
b)
d)
m5 n
m 2 n3
𝑎−2 𝑏2
𝑎3 𝑏−5