已知X²+Y²-10X-2Y+26=0,求X²Y²方的算术平方根.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 17:02:32
![已知X²+Y²-10X-2Y+26=0,求X²Y²方的算术平方根.](/uploads/image/z/3850671-39-1.jpg?t=%E5%B7%B2%E7%9F%A5X%26%23178%3B%2BY%26%23178%3B-10X-2Y%2B26%3D0%2C%E6%B1%82X%26%23178%3BY%26%23178%3B%E6%96%B9%E7%9A%84%E7%AE%97%E6%9C%AF%E5%B9%B3%E6%96%B9%E6%A0%B9.)
x){}K#Ԕ
-#!AQγMPii;jyn9>[S&HPuPs*TUAkBUhTjBMѨ5auMm
*lM|01KjlMۚ<;m'zY >7$PNm LP&@CDxdRO"u
Q$"lM@
x
已知X²+Y²-10X-2Y+26=0,求X²Y²方的算术平方根.
已知X²+Y²-10X-2Y+26=0,求X²Y²方的算术平方根.
已知X²+Y²-10X-2Y+26=0,求X²Y²方的算术平方根.
x²+y²-10x-2y+26=0
x²-10x+25+y²-2y+1=0
(x-5)²+(y-1)²=0
x-5=0 x=5
y-1=0 y=1
√(x²y²)=|xy|=|5|=5
X二次+Y二次-10X-2Y+25+1=0
(X二次-10X+25)+(Y二次-2Y+1)=0
(X-5)平方+(Y-1)平方=0
所以 X-5=0 Y-1=0
所以X=5 Y=1