If α, β, γ are the roots of $x^{3}$ + 3x + 2 = 0. Find the equation whose roots are $α^{3}$ , $β^{3}$ , $γ^{3}$ . Also find the value of $α^{3}$ + $β^{3}$ + $γ^{3}$ - 3αβγ.

Join BYJU'S Learning Program

If α,β are the roots of 3x2−2x+1=0, then the equation whose roots are −α3,−β3 is

The correct option is B 27x2+6x+1=0f(x)=3x2−2x+1 f(x)=0→α,β are the roots. The equation whose roots are −α3,−β3 is f(−3x)=0 ⇒3(−3x)2−2(−3x)+1=0⇒27x2+6x+1=0

If $α, β$ are the roots of $3 x^{2} - 2 x + 1 = 0$ , then the equation whose roots are $- \frac{α}{3}, - \frac{β}{3}$ is

The correct option is B $27 x^{2} + 6 x + 1 = 0$
$f (x) = 3 x^{2} - 2 x + 1$
$f (x) = 0 \to α, β$ are the roots.
The equation whose roots are $- \frac{α}{3}, - \frac{β}{3}$ is
$f (- 3 x) = 0$
$\Rightarrow 3 (- 3 x)^{2} - 2 (- 3 x) + 1 = 0 \Rightarrow 27 x^{2} + 6 x + 1 = 0$