$$2x^{2}+x-1; 3m^{2}+9m+6; 2m^{2}+5m-3; y^{2}+10y+21$$
$2x^{2}+y-1,\ 2m^{2}+9m+6,\ 2m^{2}+5m-3,\ y^{2}+10y+21$
