For the quadratic equation $ax^2 + bx + c = 0$,if $\alpha$ and $\beta$ are the roots,then $\frac{\alpha}{a\beta + b} + \frac{\beta}{a\alpha + b} = \dots$

Suppose $\alpha, \beta, \gamma$ are the roots of $x^3+x^2+x+2=0$. Then,the value of $\left(\frac{\alpha+\beta-2 \gamma}{\gamma}\right)\left(\frac{\beta+\gamma-2 \alpha}{\alpha}\right)\left(\frac{\gamma+\alpha-2 \beta}{\beta}\right)$ is

If $\alpha, \beta$ and $\gamma$ are the roots of the equation $x^3+3x^2-7x+5=0$,then the value of $\frac{1}{\alpha}+\frac{1}{\beta}+\frac{1}{\gamma}$ is

If in the equation $ax^2 + bx + c = 0$,the sum of roots is equal to the sum of the squares of their reciprocals,then $\frac{c}{a}, \frac{a}{b}, \frac{b}{c}$ are in

If $-1$ is a twice repeated root of the equation $ax^3+bx^2+cx+1=0$,then

The cubic equation whose roots are thrice to each of the roots of $x^3+2x^2-4x+1=0$ is