Exponential expressions are written in the form b
n
. The _______________, b,
represents a factor that is repeatedly multiplied by ________________. The
_______________, n, represents how many times the factor b is multiplied by
itself. Sometimes the power is called the _____________ or the exponent.
4
5 = 4 • 4 • 4 • 4 • 4
x
3 = x • x • x
Powers can be either ________________ or ________________. An
expression with a negative power is the ________________ fraction of the
same expression but with a ________________ power. In other words, b
-n
is
the same as 1


, when b is not equal to 0.
4
-5=
1
4
5
=
1
4⋅4⋅4⋅4⋅4
y
-3 =
1
3
=
1
⋅⋅
, for y ≠ 0
Powers can also be equal to 0. The value of b
0
is always _____, when b is not
equal to _____.
4
0
= 1
x
0
= 1, for x ≠ 0