The answer would be 234. You will multiply 28 by 9 and minus 18.
Answer:

Step-by-step explanation:

there is a factoring rule where

So,
a = x
b = y + z
I think those are coordinates of points, (-5,8) and (-2,8)
so you just need to use distance formula ((8-8)^2+(-2+5)^2)=0+9=9
square root 9=3
2√2
= 2√2
B)
√3(√2+380√2-80)
= -80√3+381√6
I hope that's help and sorry for the late answer !