Answer is A m^7/n^2 -----------------
Answer:
the first one as you can see they are the same patterns. eule r circuit starts at the edge and end at same vertex. clue look at the drawing you can find triangles like bcd, b,e d . d,ef.
X=2
-x^2=-2^2=4
-(x)^2=-(2)^2=-4
3(X+5)=3X+15
3 x X+5=3X=5