Answers

2015-06-14T19:03:16+05:30
F(2)=2(2)+(a+1)2+b=0
      4+2a+2+b=0
      2a+b=-6   (1.)
f(-3)=2(-3)+(a+1)-3+b=0
       -6-3a-3+b=0
       -3a+b=9   (2.)
now, 2a+b=-6 and -3a+b=9
on subtracting (1.) from (2.)
-3a+b-2a-b=15
-5a=15
a=-3 answer
and 2(-3)+b=-6
      -6+b=-6
therefore b=0 answer 
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