Question

1. преобразуйте в многочлен
а) 5y(3y - 2) - (y-1)(y+1)

Answer 1

5y * ( 3y - 2 ) - ( y - 1 )*( y + 1 ) = 15y^2 - 10y - ( y^2 - 1 ) = 15y^2 - 10y - y^2 + 1 = 14y^2 - 10y + 1