单项式-1/2a^2x-1b^4与3/2a^2by+1合并后结果为a^2b^4,则|2x-3y|=

问题描述:

单项式-1/2a^2x-1b^4与3/2a^2by+1合并后结果为a^2b^4,则|2x-3y|=

根据题意
单项式-1/2a^2x-1b^4与3/2a^2by+1是同类项
所以2x-1=2
x=3/2
y+1=4
y=3
2x-3y=2×3/2-3×3=-6
|2x-3y|=6