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Powers and Roots Practice Test 3
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© examsnet.com
Question : 15
Total: 40
Simplify:
√
[
(
13.8
)
2
−
(
12.8
)
2
]
÷
[
(
0.04
)
2
+
(
0.04
)
(
26.56
)
]
√
5
√
6
5
-5
6
Validate
Solution:
√
[
(
13.8
)
2
−
(
12.8
)
2
]
[
(
0.04
)
2
+
(
0.04
)
(
26.56
)
]
=
√
(
13.8
+
12.8
)
(
13.8
−
12.8
)
(
0.04
)
(
0.04
+
26.56
)
=
√
(
26.6
)
(
1
)
0.04
×
26.6
=
√
1
0.04
=
√
25
=
5
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