Solution
Now, x-1 is a factor of $$4x^{2}+3x^{2}-4x+k$$ which means x=1 satisfies the equation.
Hence, $$4(1)^{2}+3(1)^{2}-4(1)+k$$ = 0
which gives 3+k = 0 i.e k = -3
Therefore, the correct option is option D.
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