solve by completing square. x+1/x=10/3
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Answer:
Explanation:
2
x
2
+
8
x
−
10
=
2
[
x
2
+
4
x
−
5
]
2
[
x
2
+
4
x
−
5
]
=
2
[
(
x
+
2
)
2
−
2
2
−
5
]
=
2
[
(
x
+
2
)
2
−
9
]
=
2
(
x
+
2
)
2
−
18
=
0
2
(
x
+
2
)
2
=
18
(
x
+
2
)
2
=
9
x
+
2
=
±
3
x
=
±
3
−
2
x
=
−
5
x
=
1
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