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Byju's Answer
Standard XI
Mathematics
Inequalities Involving Modulus Function
If α and ...
Question
If
α
and
β
are the roots of the equation.
3
x
2
−
4
x
+
1
=
0
, from a quadratic equation whose roots are
α
2
β
and
β
2
α
.
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Solution
Since
α
,
β
are are the roots of the equation
3
x
2
−
4
x
+
1
−
0
.
we have
α
+
β
=
4
3
,
α
β
=
1
3
Now, for the required equation, the sum of the roots
=
(
α
2
β
+
β
2
α
)
=
α
3
+
β
3
α
β
=
(
α
+
β
)
3
−
3
α
β
(
α
+
β
)
α
β
=
(
4
3
)
3
−
3
×
1
3
×
4
3
1
3
=
28
9
Also, product of the roots
=
(
α
2
β
)
(
β
2
α
)
=
α
β
=
1
3
∴
The required equation is
x
2
−
28
9
x
+
1
3
=
0
or
9
x
2
−
29
x
+
3
=
0
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