What are the conditions for a polynomial f x - ax 3- bx 2- cx - d to be a cubic equation-A- a - 0- a - RB- b- c and d should not be zero C- fx-0D- b- c and d - R

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What are the conditions for a polynomial $f (x) = a x^{3} + b x^{2} + c x + d$ to be a cubic equation?

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f (x) = x^{4} + a x^{3} + b x^{2} + c x + d

If two of the zeros of the cubic polynomial $a x^{3} + b x^{2} + c x + d$ are 0 then the third zero is

(a) $\frac{- b}{a}$ (b) $\frac{b}{a}$ (c) $\frac{c}{a}$ (d) $\frac{- d}{a}$

= x^{4} + a x^{3} + b x^{2} + c x + d

(2 i) = f (2 + i) = 0

(a + b + c + d)

If $α, β$ and $γ$ are the zeros of the polynomial f(x)= $a x^{3} + b x^{2} + c x + d$ , then $\frac{1}{α} + \frac{1}{β} + \frac{1}{γ}$ is:

If one of the zeros of the cubic polynomial $a x^{3} + b x^{2} + c x + d$ is 0 then the product of the other two zeros is

(a) $\frac{- c}{a}$ (b) $\frac{c}{a}$ (c) 0 (d) $\frac{- b}{a}$

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