Question

5．若|x-2|+|x+2y-6|=0，則x=2，y=2．

Answer 1

分析 根據(jù)非負數(shù)的性質(zhì)列出方程求出x、y的值，代入所求代數(shù)式計算即可．

解答 解：根據(jù)題意得$\left\{\begin{array}{l}{x-2=0}\\{x+2y-6=0}\end{array}\right.$，
解得$\left\{\begin{array}{l}{x=2}\\{y=2}\end{array}\right.$．
故答案是：2，2．

點評 本題考查了非負數(shù)的性質(zhì)：幾個非負數(shù)的和為0時，這幾個非負數(shù)都為0．