计算 1.(4+√7)(4-√7) 2.(√6+√2)(√6-√2) 3.(√3+2) 4.(2√5-√2) 求过程

2025-06-20 12:05:00
推荐回答(1个)
回答1:

  1. (4+√7)(4-√7)=4²-(√7)²=16-7=9

  2. (√6+√2)(√6-√2)=(√6)²-(√2)²=6-2=4

  3. (√3+2)??题目有问题??没打完么

  4.(2√5-√2)???