y2=14y-24
y2-14y+24=0
y2-2y-12y+24=0
yx(y-2)-12(y-2)=0
(y-2)x(y-12)=0
y-2=0
y-12=0
y=2
y=12
y1=2,y2=12
x4-81=0
x4=81
x=+3
x=-3
x=3
x1=-3.x=3
2
Step-by-step explanation: