Question

17. If A.,B.Y are the zeros of the polynomial f(x) = ax^3+bx^2+cx+d then A^2+B^2+Y^2 is
​

Answer 1

Step-by-step explanation:

Given two zeroes of a cubic polynomial ax

3

+bx

2

+cx+d

are zero, Let third zero be y

then sum of zeroes =

a

−b

⇒0+0+y=

a

−b

⇒y=

a

−b