以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
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以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
x²+y²-2x-6y=-10
x²+y²-2x-6y+10=0
(x²-2x+1)+(y²-6y+9)=0
(x-1)²+(y-3)²=0
x=1 y=3
x的2011次方y²
=1的2011次方x3²
=1x9
=9
这道题绝不是考计算量 你可以把x=正负1代入,,,,试一下
以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
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