Solving Quadratic Equations using Quadratic Formula
If
a
x
2
+
b
x
+
c
= 0, then
x
=
-b
±
b
2
-
4ac
2a
So, if
2
x
2
-
5
x
+
2
= 0, then
x
=
-
(
-5
)
±
(
-5
)
2
-
(
4
)
(
2
)
(
2
)
(
2
)
(
2
)
or,
x
=
5
±
25
-
16
4
or,
x
=
5
±
9
4
or,
x
=
5
±
3
4
or,
x
=
8
4
or,
x
=
2
4
or,
x
=
2
or,
x
=
1
2
Algebra
Analytic Geometry
Differential Calculus
Integral Calculus
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Copyright © Dayal D. Purohit, Ph.D.(Mathematics)