Question

Add the following:$2p^2{q}^2-3pq+4,5+7pq-3p^2{q}^2$

Answer 1

Adding the given relations

On combining the like terms and adding them we get

$$\begin{gathered} \Rightarrow 2p^2{q}^2-3pq+4+5+7pq-3p^2{q}^2 \\ =2p^2{q}^2–3p^2{q}^2–3pq+7pq+4+5 \\ =–p^2{q}^2+4pq+9 \end{gathered}$$

Hence, On adding $2p^2{q}^2-3pq+4,5+7pq-3p^2{q}^2$ we get $-p^2{q}^2+4pq+9$.