The sum of zeroes of the polynomial, ax² + bx + c, is given by

The sum of the zeroes of the polynomial $p\left(x\right)=5x^2+2x-3$ is

The zeros of a quadratic polynomial _____ are $4$ and $3$.

If $\alpha , \beta$ and $\gamma$ are the zeros of a cubic polynomial $p\left(x\right)=a{x}^3+b{x}^2+cx+d, a\ne 0$ then $\frac{1}{\alpha }+\frac{1}{\beta }+\frac{1}{\gamma }=$ _____.