Adding Polynomials

[topaz roost]

please can someone help me with the front and back of this

[ember tapir]

Which one ?

[spark badger]

for 6) you just add the lengths of each side as usual

and you have indications for some sides that have the same length

ooh I see the problem

for 7) it’s the same thing : perimeter = u^3+6+2(7uv^5-v^2)+2*3u^2