X-Y=5,XY=3.XY是多少?
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X-Y=5,XY=3.XY是多少?X-Y=5,XY=3.XY是多少?X-Y=5,XY=3.XY是多少?Y=X-5XY=X²-5X=3X²-5X-3=0X=(5±√37)/2Y=X-
X-Y=5,XY=3.XY是多少?
X-Y=5,XY=3.XY是多少?
X-Y=5,XY=3.XY是多少?
Y=X-5
XY=X²-5X=3
X²-5X-3=0
X=(5±√37)/2
Y=X-5
X=(5-√37)/2,Y=(-5-√37)/2
X=(5+√37)/2,Y=(-5+√37)/2
x=(5±√37)/2
y=(-5±√37)/2
x=y+5
(y+5)*y=3
(y+5/2)*(y+5/2)=3+25/4
Y=开平方(3+25/4)-5/2
x=5+Y
X=(5-√37)/2,Y=(-5-√37)/2
X=(5+√37)/2,Y=(-5+√37)/2
X=(5-√37)/2,Y=(-5-√37)/2
X=(5+√37)/2,Y=(-5+√37)/2
x=(5±√37)/2
y=(-5±√37)/2
X=(5-√37)/2,Y=(-5-√37)/2
X=(5+√37)/2,Y=(-5+√37)/2
x= , y=
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