x^2+(4-3y)x+3y^2-18y+52=0x=0.5(3y-4+sqrt((4-3y)^2-4(3y^2-18y+52)))=0.5(3y-4+sqrt(-3(y-8)^2))或x=0.5(3y-4-sqrt(-3(y-8)^2))而要使x有实数解,-3(y-8)^2>=0所以y=8x=108^10的个位数字为4