РАЗЛОЖИТЬ НА МНОЖИТЕЛИ 4y^3-12y^2+(9-6y+y^2)
4y²(y-3)+(y-3)²=(y-3)(4y²+y-3)=(y-3)(y+1)(4y-3) 4y²+y-3=4(y+1)(y-3/4)=(y+1)(4y-3) D=1+48=49 y1=(-1-7)/8=-1 y2=(1+7)/8=3/4