|a-b+3|+(2a+b)^2=0=>a-b=-3,2a+b=0 =>a=-1,b=22a^3b(2ab+1)-a^2(-2ab)^2=2a^3b(2ab-1)-2a^4b^2=2a^3b=2*(-1)*2=-4

|a-b+3|+(2a+b)^2=0=>a-b=-3,2a+b=0 =>a=-1,b=22a^3b(2ab+1)-a^2(-2ab)^2=2a^3b(2ab-1)-2a^4b^2=2a^3b=2*(-1)*2=-4
|a-b+3|+(2a+b)^2=0
=>a-b=-3,2a+b=0 =>a=-1,b=2
2a^3b(2ab+1)-a^2(-2ab)^2=2a^3b(2ab-1)-2a^4b^2
=2a^3b=2*(-1)*2=-4

|a-b+3|+(2a+b)^2=0=>a-b=-3,2a+b=0 =>a=-1,b=22a^3b(2ab+1)-a^2(-2ab)^2=2a^3b(2ab-1)-2a^4b^2=2a^3b=2*(-1)*2=-4
输入法换成智能ABC 然后输入a再输入回车左边的符号两次再按两下回车最后翻到最后一页打出了删多余的就行了 买一张名字更改卡 A