若根号x-1+(y-3)^2=0,求根号7x+y^2要详细过程

2024-12-14 21:42:15
推荐回答(1个)
回答1:

解:∵√(x-1)+(y-3)²=0
  ∴x-1=0,y-3=0
  ∴x=1,y=3
  ∴√(7x+y²)=√(7×1+3²)=√16 =4