Question 954274


{{{(3r^2s + 5rs + 3) + (-8rs^2 -9rs-12)}}}

{{{3r^2s + 5rs + 3 -8rs^2 -9rs-12}}}

{{{3r^2s-8rs^2 + 5rs -9rs + 3 -12}}}

{{{3r^2s-8rs^2 -4rs  -9}}}