写出下列各代数式的系数:3a,πr^2,-a/7,-2/3x^2y,a^2bc,-xy^2

问题描述:

写出下列各代数式的系数:3a,πr^2,-a/7,-2/3x^2y,a^2bc,-xy^2

3,π,-1/7,-2/3,1,-1

3a的系数是3
πr²的系数是π
-a/7的系数是-1/7
-2/3x²y的系数是-2/3
a²bc的系数是1
-xy²的系数是-1