A polynomial is given by $k=-9\mathrm{.}0w^2+8\mathrm{.}0w-10\mathrm{.}0.$ Read $w$ from input as a float and compute $k$ using the polynomial.

Ex: If the input is $2\mathrm{.}6,$ then the output is:

$-50\mathrm{.}040$

Note: $w^2$ can be computed using $*.$

$123$

I$\text{'}\text{'}$ Your code goes here

$4pr{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}(f^{\text{'}}\{k$:$\mathrm{.}3f{\}}^{\text{'}})$