If a, b are the zeroes of polynomial 5x2 - 7x + 2, then the values of -+-ab is
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Since,αandβare zeores of
5x
2
−
7x+
2
⇒
α+
β=
5
7
,αβ=
5
2
Now,
α
1
+
β
1
=
αβ
β+α
=
2/5
7/5
=
2
7
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