Question

3. If the zeroes of the quadratic polynomial x2 + (a + 1) x + b are 2 and –3, then (A) a = –7, b = –1 (B) a = 5, b = –1 (C) a = 2, b = – 6 (D) a = 0, b = – 6​

Answer 1

Answer:

(D) a = 0, b = – 6​

Step-by-step explanation:

Given roots are 2 and -3

Sum of roots= 2+(-3)=2-3=-1

But Sum = -(a+1)

=>-(a+1)=-1

=>a+1=1

=>a=0

Product of roots=2)-3=-6

But product of roots=b

=>b=-6