Тороплюсь....хелп ми

1)y^+4y+4-5y=9-12+4+15=16 2)x^2+2x+1+6x^2-6x\(x-1)=7x^2-4x1\(x-1)=7*(-16)+4*4+1/(-5)=-112+17\(-5)=19