Question

If the zeroes of the quadratic polynomial x² + (0+1)x+b are 2 and -3, then

(A) a = -7, b = -1

(C) a = 2, b = -6

(B) a = 5, b = -1

(D) a=0,b=-6​

Answer 1

Answer:

Correct option is

D

a=0,b=−6

x

2

+(a+1)x+b is the quadratic polynomial.

2 and −3 are the zeros of the quadratic polynomial.

Thus, 2+(−3)=

1

−(a+1)

=>

1

(a+1)

=1

=>a+1=1

=>a=0

Also, 2×(−3)=b

=>b=−6