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National
Medium
Numbers & Operations
7–9
What is the value of
144
−
81
\sqrt{144} - \sqrt{81}
144
−
81
?
Qual é o valor de
144
−
81
\sqrt{144} - \sqrt{81}
144
−
81
?
Answer options
A.
63
B.
21
C.
15
D.
3
Check Answer
Solution
Step 1 of 3
1.
144
=
12
\sqrt{144} = 12
144
=
12
Next step
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