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Test Index
Algebra and Applications Test 1
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© examsnet.com
Question : 39
Total: 40
If
x
=
4
a
b
a
+
b
, then the value of
x
+
2
a
x
−
2
a
+
x
+
2
b
x
−
2
b
is:
a
b
0
2
Validate
Solution:
👈: Video Solution
x
+
2
a
x
−
2
a
+
x
+
2
b
x
−
2
b
=
2
x
2
−
8
a
b
(
x
−
2
a
)
(
x
−
2
b
)
=
2
(
4
a
b
a
+
b
)
2
−
8
a
b
(
4
a
b
a
+
b
−
2
a
)
(
4
a
b
a
+
b
−
2
b
)
=
2
(
16
a
2
b
2
a
2
+
b
2
+
2
a
b
)
−
8
a
b
(
4
a
b
−
2
a
2
−
2
a
b
a
+
b
)
(
4
a
b
−
2
a
b
−
2
b
2
a
+
b
)
=
16
a
2
b
2
−
8
a
3
b
−
8
a
b
3
8
a
2
b
2
−
4
a
3
b
−
4
a
b
3
=
2
© examsnet.com
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