若m²+2m+n²-6n+9=0,求m和n的值.m²若m²+2m+n²-6n+9=0,求m和n的值.m²+2m+n²-6n+9=0即(m+1)²+(n-3)²=0∵(m+1)²≥0,(n-3)²≥0,∴(m+1)²=0,(n-3)²=0,∴m+1=0,n-3
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/18 02:38:19
![若m²+2m+n²-6n+9=0,求m和n的值.m²若m²+2m+n²-6n+9=0,求m和n的值.m²+2m+n²-6n+9=0即(m+1)²+(n-3)²=0∵(m+1)²≥0,(n-3)²≥0,∴(m+1)²=0,(n-3)²=0,∴m+1=0,n-3](/uploads/image/z/764457-33-7.jpg?t=%E8%8B%A5m%26%23178%3B%2B2m%2Bn%26%23178%3B-6n%2B9%3D0%2C%E6%B1%82m%E5%92%8Cn%E7%9A%84%E5%80%BC.m%26%23178%3B%E8%8B%A5m%26%23178%3B%2B2m%2Bn%26%23178%3B-6n%2B9%3D0%2C%E6%B1%82m%E5%92%8Cn%E7%9A%84%E5%80%BC.m%26%23178%3B%2B2m%2Bn%26%23178%3B-6n%2B9%3D0%E5%8D%B3%EF%BC%88m%2B1%EF%BC%89%26%23178%3B%2B%EF%BC%88n-3%EF%BC%89%26%23178%3B%3D0%E2%88%B5%EF%BC%88m%2B1%EF%BC%89%26%23178%3B%E2%89%A50%2C%EF%BC%88n-3%EF%BC%89%26%23178%3B%E2%89%A50%2C%E2%88%B4%EF%BC%88m%2B1%EF%BC%89%26%23178%3B%3D0%2C%EF%BC%88n-3%EF%BC%89%26%23178%3B%3D0%2C%E2%88%B4m%2B1%3D0%2Cn-3)
若m²+2m+n²-6n+9=0,求m和n的值.m²若m²+2m+n²-6n+9=0,求m和n的值.m²+2m+n²-6n+9=0即(m+1)²+(n-3)²=0∵(m+1)²≥0,(n-3)²≥0,∴(m+1)²=0,(n-3)²=0,∴m+1=0,n-3
若m²+2m+n²-6n+9=0,求m和n的值.m²
若m²+2m+n²-6n+9=0,求m和n的值.
m²+2m+n²-6n+9=0
即(m+1)²+(n-3)²=0
∵(m+1)²≥0,(n-3)²≥0,
∴(m+1)²=0,(n-3)²=0,
∴m+1=0,n-3=0
利用以上方法 求出x和y的值.
x²+5y²-4xy+2y+1=0
若m²+2m+n²-6n+9=0,求m和n的值.m²若m²+2m+n²-6n+9=0,求m和n的值.m²+2m+n²-6n+9=0即(m+1)²+(n-3)²=0∵(m+1)²≥0,(n-3)²≥0,∴(m+1)²=0,(n-3)²=0,∴m+1=0,n-3
x²+5y²-4xy+2y+1=0
x²+4y²-4xy+y²+2y+1=0
(x-2y)^2+(y+1)^2=0
∵(x-2y)^2>=0,(y+1)^2>=0
∴(x-2y)^2=0,(y+1)^>=0
∴ x-2y=0,y+1=0
∴y=-1,x=-2