Answer:
9x^4 -36
Step-by-step explanation:
see image below:)
63 and 53
you could use trail and error. So:
13+23=9
33+43=91
63+73=559
53+63=341
141.2/175.8=.803185
1-.803185=.1968=20% markdown
ples give brainliest! :D
it is many triangles
