Exponents and Roots
Quantitative Reasoning · Flashcards
QUANTITATIVE REASONING · FLASHCARDS
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QUESTION
State the quotient of powers rule for the same base:
a
m
a
n
\frac{a^m}{a^n}
a
n
a
m
equals what (for
a
≠
0
a \ne 0
a
=
0
)?
QUESTION
What is the simplified form of
72
\sqrt{72}
72
?
QUESTION
What is the value of
49
\sqrt{49}
49
?
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ANSWER
7
7
7
. Since
7
2
=
49
7^2 = 49
7
2
=
49
and 7 is nonnegative, it is the principal square root.
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