来自董凌燕的问题
√5-√6-√20+√2/3+√9/5=
√5-√6-√20+√2/3+√9/5=
1回答
2020-03-30 13:20
√5-√6-√20+√2/3+√9/5=
√5-√6-√20+√2/3+√9/5=
√5-√6-√20+√2/3+√9/5=
=√5-√6-2√5+(√6)/3+(3√5)/5
=-(2√5)/5-(2√6)/3