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If f(x)=ax^2+bx+c and g(x)+px^2+qx with ...

If `f(x)=ax^2+bx+c` and `g(x)+px^2+qx` with `g(1)=f(1)` `g(2)-f(2)=1` `g(3)-f(3)=4` then `g(4)-f(4)` is

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