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Byju's Answer
Standard VII
Mathematics
Algebraic Equation
solve using q...
Question
solve using quadratic formula: 6x2+(12-8a)x-16a=0
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Solution
6
x
2
+
12
-
8
a
x
-
16
a
=
0
⇒
3
x
2
+
6
-
4
a
x
-
8
a
=
0
Now
,
A
=
3
;
B
=
6
-
4
a
;
C
=
-
8
a
Now
,
D
=
B
2
-
4
AC
=
6
-
4
a
2
-
4
3
-
8
a
=
36
+
16
a
2
-
48
a
+
96
a
=
16
a
2
+
48
a
+
36
=
4
4
a
2
+
12
a
+
9
Now
,
by
using
quadratic
formula
,
x
=
-
B
±
D
2
A
⇒
x
=
4
a
-
6
±
2
4
a
2
+
12
a
+
9
6
⇒
x
=
4
a
-
6
±
2
2
a
+
3
2
6
⇒
x
=
4
a
-
6
+
4
a
+
6
6
and
x
=
4
a
-
6
-
4
a
+
6
6
⇒
x
=
8
a
6
and
x
=
-
12
6
⇒
x
=
4
a
3
and
x
=
-
2
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