1) x^2+22x-121-x^2=11
22x-110=0
22x=132
x=6
2) 69-169+26y-y^2=-y^2
26y-100=0
y=100/26 = 50/13 = 3 11/13
3) 44 +z^2 = 144 +24z + z^2
-24z-100=0
24z=100
z=100/24 = 25/6 = 4 1/6
4) 31 - t^2 = -t2+18t-81)
31-18t+81=0
-18t=-50
t=25/9 = 2 7/9
дальше примеры не видно