Question

( v-3v)²: v-(2v+1)( v-5)+(3-v)² , ( 5y-3)²-(8y-2y):(2y)-(2+5y) (5y-2) упрости выражения

Answer 1

(-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