ax+bx+(x−1)²−a−b
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Answer:
α+β=−
a
b
,αβ=
a
c
The equation ax
2
−bx(x−1)+c(x−1)
2
=0 can be written as x
2
(a−b+c)+(b−2c)x+c=0
Sum of the roots of this equation is
S=−
a−b+c
b−2c
=
a−b+x
−b+2c
=
1−
a
b
+
a
c
−
a
b
+
a
2c
⇒S=
1+α+β+αβ
α+β+2αβ
=
α+1
α
+
β+1
β
Product of the roots =
a−b+c
c
⇒P=
1−
a
b
+
a
c
a
c
⇒P=
1+α+β+αβ
αβ
=
α+1
α
.
β+1
β
Thus, ax
2
−bx(x−1)+c(x−1)
2
=0
has
α+1
α
,
β+1
β
as its two roots.
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