3/5 = 0,6
..................................................
5)36 :( x-2)=4
x-2=36:4
х-2=9
x=9+2
х=11
проверка
36 :( 11-2)= 36:9=4
6) 36:x-2=4
36 :х=4+2
х=36:6
х=6
Проверка
36:6-2=6-2=4
436-267=169
99÷3=33
169-33=136
(<span>2y(x -2) -x²(x +2) =2*2*(2 -2) -2²*(2 +2) = -4*4 = -16</span>