ответы №244, №246, №248

Ответы:

№244

http://gdz4you.com/algebra/algebra-8-klass/308-algebra-8-klass-os-ster.html#My_CurentPicForTaskPrev

№246http://gdz4you.com/algebra/algebra-8-klass/308-algebra-8-klass-os-ster.html#My_CurentPicForTaskPrev

№248

http://gdz4you.com/algebra/algebra-8-klass/308-algebra-8-klass-os-ster.html#My_CurentPicForTaskPrev