If $$x^3 + 2x^2 - 5x + k$$ is divisible by x + 1, then what is the value of k?
$$f(x)=x^3 + 2x^2 - 5x + k$$ is divisible by $$(x+1)$$
=> $$x=-1$$ is a factor of $$f(x)$$
=> $$f(-1)=0$$
=> $$(-1)^3+2(-1)^2-5(-1)+k=0$$
=> $$-1+2+5+k=0$$
=> $$k=-6$$
=> Ans - (A)
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