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Powers and Roots Practice Test 1
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© examsnet.com
Question : 2
Total: 40
What is the square root of
(
7
+
3
√
5
)
(
7
−
3
√
5
)
?
3
√
5
4
2
√
5
Validate
Solution:
👈: Video Solution
√
(
7
+
3
√
5
)
(
7
−
3
√
5
)
=
√
(
7
)
2
−
(
3
√
5
)
2
=
√
49
−
45
=
2
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