来自程储旺的问题
【去括号:-(2a+b-c)=,-(-x²+xy-y²)=,-(m²+n²)-(-m-n)=,a-[-b-(c-d)]=.单项式-a²b/4的系数是?,次数是?叙述a²-b²的实际意义:】
去括号:-(2a+b-c)=,-(-x²+xy-y²)=,-(m²+n²)-(-m-n)=,a-[-b-(c-d)]=.
单项式-a²b/4的系数是?,次数是?叙述a²-b²的实际意义:
1回答
2019-12-27 00:53