Question

# Add the following two terms given below$3{p^2}{q^2} - 4pq + 5, - 10{p^2}{q^2}\& 15 + 9pq + 7{p^2}{q^2}$

Given terms are:$3{p^2}{q^2} - 4pq + 5, - 10{p^2}{q^2}\& 15 + 9pq + 7{p^2}{q^2}$
$\Rightarrow \left( {3{p^2}{q^2} - 4pq + 5} \right) + \left( { - 10{p^2}{q^2}} \right) + \left( {15 + 9pq + 7{p^2}{q^2}} \right) \\ \Rightarrow {p^2}{q^2}\left( {3 - 10 + 7} \right) + pq\left( {9 - 4} \right) + 5 + 15 \\ \Rightarrow {p^2}{q^2}\left( 0 \right) + pq\left( 5 \right) + 20 \\ \Rightarrow 5pq + 20 \\$
Hence, the sum of terms given above is $5pq + 20$.