If α and β are the roots of ax2 + bx + c = 0, then one of the quadratic equations whose roots are
is
Given:
and
are roots of ![]()
Required:- Quadratic equation with roots
and ![]()
Sum of roots of given quadratic equation = ![]()
∴
=
-eq(1)
Product of roots of given quadratic equation = ![]()
∴
=
-eq(2)
Sum of roots of required quadratic equation = ![]()
Product of roots of required quadratic equation = ![]()
Here,
Dividing eq(1) by eq(2) we get,

∴ Sum of roots of the required quadratic equation = ![]()
Again by making the reciprocal of eq(2), we get
![]()
∴ Product of roots of the required quadratic equation = ![]()
We know that, when roots of the quadratic equation are known, we can calculate the quadratic equation as:
x2-(sum of roots)x + (product of roots) = 0
∴ Required quadratic equation: x2 –(
) + (
) = 0
⇒
= 0
⇒ cx2 + bx + a = 0
∴ Required quadratic equation is: cx2 + bx + a = 0
∴ Correct option is -Option(C)
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