A polynomial of degree $n$ has at most    zeroes.

A polynomial having _____ terms is called a binomial. (Write the answer in words)

The shape of the graph of a quadratic polynomial $a{x}^2+bx+c \left(a\ne 0\right)$ is a _____.

For any quadratic polynomial $a{x}^2+bx+c \left(a\ne 0\right)$, the graph of corresponding equation $y=a{x}^2+bx+c$ is a parabola opening _____ if, $a>0$. $\left(\mathrm{Upwards} / \mathrm{Downwards}\right)$

For any quadratic polynomial $a{x}^2+bx+c \left(a\ne 0\right)$, the graph of corresponding equation $y=a{x}^2+bx+c$ is a parabola opening downwards if _____$<0$.

The zeroes of the polynomial  $x^2-64$ are _____.

If one zero of $3x^2-8x+2k+1$ is seven times the other, then $k$ is _____.

The graph of $f\left(x\right)$ is shown below. The number of zeroes of $f\left(x\right)$ are