来自林作铨的问题
2.6整式的加减1.去括号:-{-[-(1-a)-(1-b)]}2.化简:(3x方-2x+1)-(x方+2x+2)-(-2x方-x)
2.6整式的加减
1.去括号:-{-[-(1-a)-(1-b)]}
2.化简:(3x方-2x+1)-(x方+2x+2)-(-2x方-x)
1回答
2020-06-09 07:06
2.6整式的加减1.去括号:-{-[-(1-a)-(1-b)]}2.化简:(3x方-2x+1)-(x方+2x+2)-(-2x方-x)
2.6整式的加减
1.去括号:-{-[-(1-a)-(1-b)]}
2.化简:(3x方-2x+1)-(x方+2x+2)-(-2x方-x)
a+b-2;
10x^2-3x-1