( v-3v)²: v-(2v+1)( v-5)+(3-v)² , ( 5y-3)²-(8y-2y):(2y)-(2+5y) (5y-2) упрости выражения
(-2v)²:v-(2v²-9v-5)+9-6v+v² 4v²:v-2v²+9v+5+9-6v+v² 4v-v²+3v+13 -v²+7v+13 ______________________ 25y²-30y+9-3-25y²+4 30y+10