2x^2+5x-3=0. find root by completing square method.
Answers
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0
0
=
16
x
2
+
40
x
−
24
=
(
4
x
)
2
+
2
(
5
)
(
4
x
)
−
24
=
(
4
x
+
5
)
2
−
25
−
24
=
(
4
x
+
5
)
2
−
7
2
=
(
(
4
x
+
5
)
−
7
)
(
(
4
x
+
5
)
+
7
)
=
(
4
x
−
2
)
(
4
x
+
12
)
=
(
2
(
2
x
−
1
)
)
(
4
(
x
+
3
)
)
=
8
(
2
x
−
1
)
(
x
+
3
)
Hence:
x
=
1
2
or
x
=
−
3
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