Question

Find the value of :

$2p+3q+4r+pqr$ when $p=-1,q=2$ and $r=3$

Answer 1

Substituting $p=-1,q=2$ and $r=3$ in the given expression , we get

$$\begin{gathered} 2p+3q+4\mathrm{r}+\mathrm{pqr}=2\times \left(-1\right)+3\times 2+4\times 3+\left(-1\right)\times 2\times 3 \\ =-2+6+12-6 \\ =-8+18 \\ =10 \end{gathered}$$

Hence,the value of given expression will be $10$.