若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 12:07:11
![若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___.](/uploads/image/z/2481931-19-1.jpg?t=%E8%8B%A5%7Cm-3%7C%EF%BC%8B%28n%EF%BC%8B3%29%26%23178%3B%3D0%2C%E5%88%99m%EF%BC%8B2n%E7%9A%84%E5%80%BC%E4%B8%BA___.%E5%8C%96%E7%AE%80a%EF%BC%8Bb%EF%BC%8B%28a-b%29%E7%9A%84%E6%9C%80%E5%90%8E%E7%BB%93%E6%9E%9C%E6%98%AF___%E8%8B%A5%7Cm-3%7C%EF%BC%8B%28n%EF%BC%8B3%29%26%23178%3B%3D0%2C%E5%88%99m%EF%BC%8B2n%E7%9A%84%E5%80%BC%E4%B8%BA___.%E5%8C%96%E7%AE%80a%EF%BC%8Bb%EF%BC%8B%28a-b%29%E7%9A%84%E6%9C%80%E5%90%8E%E7%BB%93%E6%9E%9C%E6%98%AF___.)
若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___.
若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___
若|m-3|+(n+3)²=0,则m+2n的值为___.
化简a+b+(a-b)的最后结果是___.
若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___若|m-3|+(n+3)²=0,则m+2n的值为___.化简a+b+(a-b)的最后结果是___.
若|m-3|+(n+3)²=0,则m+2n的值为___.
∵|m-3|≥0,(n+3)²≥0
∴m-3=0 n+3=0
解得:m=3 n=-3
∴m+2n=3+2×(-3)=-3
化简a+b+(a-b)的最后结果是___.
a+b+(a-b)
=a+b+a-b
=2a
-3,2a