合并同类项1/2a²-3a三方+1/4-2a+7a三方-1/3-2/3a²=
问题描述:
合并同类项1/2a²-3a三方+1/4-2a+7a三方-1/3-2/3a²=
答
1/2a²-3a三方+1/4-2a+7a三方-1/3-2/3a²
=4a三次方-1/6a²-5a-1/12解一下 1/2(1-x/3)-2/3(3+x/2)=11/2(1-x/3)-2/3(3+x/2)=11/2-1/6x-2+1/3x=11/3x-1/6x=1+2-1/21/6x=5/2x=15