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Byju's Answer
Standard X
Mathematics
Sum and Product of Roots of a Quadratic Equation
22 x-3.2x+2+3...
Question
2
2
x
-
3
.
2
(
x
+
2
)
+
32
=
0
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Solution
Given
:
2
2
x
−
3.2
(
x
+
2
)
+
32
=
0
⇒
(
2
x
)
2
−
3.2
x
.2
2
+
32
=
0
Let 2
x
be
y
.
∴
y
2
−
12
y
+
32
=
0
⇒
y
2
−
8
y
−
4
y
+
32
=
0
⇒
y
(
y
−
8
)
−
4
(
y
−
8
)
=
0
⇒
(
y
−
8
)
=
0
or
(
y
−
4
)
=
0
⇒
y
=
8
or
y
=
4
∴
2
x
=
8
or
2
x
=
4
⇒
2
x
=
2
3
or
2
x
=
2
2
⇒
x
=
2
or
3
Hence,
2
and 3 are the roots of the given equation
.
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