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11. Exponents and Powers
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11. Exponents and Powers
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Important Points
1.
Exponents convert large numbers in shorter form.
2.
Exponent laws:
a
m
x a
n
= a
m+n
a
m
÷ a
n
= a
m-n
(m > n)
(a
m
)
n
= a
mn
a
m
x b
m
= (ab)
a
m
÷ b
m
= (a/b)
m
a
0
= 1
a
-m
= 1/a
m
(–1)even number = 1
(–1)odd number = – 1
