#1 is a right isosceles
#2 I think is equilateral
#3 it is obtuse
#4 I think its scalene
I hope I helped :)
The answer would be 168 :)
2(x+a)^2+3(z+a)+1
2(x²+a²)+3z+3a+1
2x²+2a²+3z+3a+1
Since there aren't any like terms, you can't simplify it any more.
