x方-2x+1与y+根号2的绝对值,互为相反数求x方-4x+4+(y-1)(y+1)

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x方-2x+1与y+根号2的绝对值,互为相反数求x方-4x+4+(y-1)(y+1)
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x方-2x+1与y+根号2的绝对值,互为相反数求x方-4x+4+(y-1)(y+1)
x方-2x+1与y+根号2的绝对值,互为相反数求x方-4x+4+(y-1)(y+1)

x方-2x+1与y+根号2的绝对值,互为相反数求x方-4x+4+(y-1)(y+1)
x方-2x+1与y+根号2的绝对值,互为相反数
(x-1)²+│y+√2│=0
x-1=0,y+√2=0
x=1,y=-√2
x方-4x+4+(y-1)(y+1)
=(x-2)²+y²-1
=(1-2)²+(-√2)²-1
=1+2-1
=2

x²-2x+1与|y+√2|互为相反数
那么x²-2x+1+|y+√2|=0
即(x-1)²+|y+√2|=0
所以x=1,y=-√2
那么x²-4x+4+(y-1)(y+1)
=(x-2)²+y²-1
=(1-2)²+2-1
=2

2 .x=1 ,y=-根号2 .带进去就行了


原式可化为
(x-1)²+|y+√2|=0
∴x=1,y=-√2
所以
x的平方-4x+4+(y+1)(y-1)
=(x-2)²+(y²-1)
=1²+1²
=1+1
=2

按已知 x^2-2x+1=-|y+√2|
即(x-1)^2=-|y+√2|
非负数=非正数
所以x-1=y+√2=0
x=1,y=-√2
x^2-4x+4+(y-1)(y+1)=(x-2)^2+y^2-1
=1+2-1
=2

因两个数都为非负数,则x为1,y为负根号2,结果为,﹙x-2﹚²+y²-1=2

因为x²-2x+1=﹙x-1﹚²≧0与|y+√2|≧0互为相反数,所以x=1,y=﹣√2,带入x²-4x+4+(y-1)(y+1)=1²-4×1+4+(√2-1)(√2+1)=1-4+4+2-1=2
希望能帮助你。