x*x+y*y-10x+8y+45.当x=____时y=______时,有______(大或小)值,为_______. 因式分解题、求解,谢谢~

X*Y,当Y (x-8y)(x+y) {(x,y) |x|+|y| x>y?x:y 当x,y满足条件|x|+|y| 当x,y满足条件|x|+|y| 当X>0,Y 当x>0,y 当x>0,y 当x>0,y 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) x^/y-x-y^/y-x化简. 化简x(y-x)-y(x-y) 行列式计算 x y x+y y x+y x x+y x y|x y x+y ||y x+y x ||x+y x y | y/(x+y)-x/(x-y) X+Y-8X+10Y+41=O,求X/Y-Y/X的值 y+y+x=10,x+y+x=8,y=?,x=? x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2