A)3-2(5-x)(x-5)-2(5+x)² б)(x-y-z)(x-y--y)² в)(x+y+z)(x-y-+y-z)(x-y+z) г)(x+y-x)(x-y++y+z)(x-y-z)

заушкина    1   31.05.2019 18:40    0