A = 23
23 - 7 = 16
23 + 8 = 31
a= 57
57 - 7 = 50
57 + 8 = 65
a = 60
60 - 7 = 53
60 + 8 = 68
a = 92
92 - 7 = 85
92 + 8 = 100
........................................
Ответ: P1=AB+BC+CD+DA S1=BAxAD
P2=FE+EH+HG+GF S2= FGxFE
Пошаговое объяснение:
1)lx-4l=2
-x+2=0
X=2
-2=0
2) ly +5l=3
-y-8=0
y=-8
-3=0
3) l^4x-31=0
x+3=0
x=-3
0=0
4)l^4-5lx=0
5x+1=0
x=-1/5
0=0