作业帮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~
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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*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*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~
原式=（x-5)(x-5)+(y+4)(y+4)+4
当x=5,y=-4时,有最小值,为4
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