Question

If ` -2 and 3` are the zeros of the quadratic polynomial ` x^(2) + (a+1) x + b` then
A. ` a=- 2, b = 6`
B. ` a = 2, b =- 6`
C. ` a =-2, b =- 6`
D. `a = 2, b = 6`

Answer 1

Correct Answer - C
`alpha+beta = 3 +(-2) = 1 and alpha beta = 3 xx(-2) =- 6`.
`:. -(a+1) = 1 rArr a +1 =-1 rArr a =- 2.`
Also, b =- 6.