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The parabolas y=x^(2+ax+b and y=x(c-x) t...

The parabolas `y=x^(2+ax+b` and y=x(c-x) touch each other at (1,0). Then a, b, c are respectively,

A

3,2,-1

B

-3,2,1

C

3,-2,1

D

- 3, -2 , 1

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B
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