If $\alpha ,\beta$ are the zeroes of the polynomials $2{y^2} + 7y + 5$, then find the value of $\alpha + \beta + \alpha \beta .$
If $\alpha,\beta$ are the zeroes of the polynomial $p(x)=3x^2-2x-6$. Find $\cfrac{1}{\alpha}+\cfrac{1}{\beta}$
If $\alpha ,\beta$ are the roots of $x^{2}+x-1=0$ then what is the equation whose root are  ${a} ^{5}$ and ${b}^{5}$