Solving Quadratic Equations using Quadratic Formula
If
a
x
2
+
b
x
+
c
= 0, then
x
=
-b
±
b
2
-
4ac
2a
So, if
3
x
2
+
82
x
+
27
= 0, then
x
=
-
(
82
)
±
(
82
)
2
-
(
4
)
(
3
)
(
27
)
(
2
)
(
3
)
or,
x
=
-82
±
6724
-
324
6
or,
x
=
-82
±
6400
6
or,
x
=
-82
±
80
6
or,
x
=
-2
6
or,
x
=
-162
6
or,
x
=
-1
3
or,
x
=
-27
Algebra
Analytic Geometry
Differential Calculus
Integral Calculus
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Copyright © Dayal D. Purohit, Ph.D.(Mathematics)