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If f(x)=alpha x^(2)+b x+c, then the val...

If `f(x)=alpha x^(2)+b x+c`, then the values of a and b for which the identity `f(x+1)-f(x)=8 x+3` is satisfied are

A

1.a=1 b=4

B

2.a=1 b=-4

C

3.a=4 b=1

D

4.a=4 b=-1

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The correct Answer is:
D
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