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Q.1
Polynomial is x^2 +(a+1)x +b
Zeros are 2 and -3
If we replace zeros by x the polynomial will be equal to 0
If x=2
(2)^2 + (a+1)2 + b =0
4 + 2a + 2 + b = 0
2a + b + 6 =0 ..... 1st eq
If x=-3
(-3)^2 + (a+1)(-3) + b =0
9 - 3a -3 + b =0
b-3a +6 =0 ..... 2nd eq
Solving 1st and 2nd eq we get -
a=0 b= -6
So option D is correct
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