因式分解:4+12(x+y)+9乘以(x-y)的平方
问题描述:
因式分解:4+12(x+y)+9乘以(x-y)的平方
答
原式=[3(x-y)]+2×[3(x-y)]×2+2 =[3(x-y)+2] =(3x-3y+2)
因式分解:4+12(x+y)+9乘以(x-y)的平方
原式=[3(x-y)]+2×[3(x-y)]×2+2 =[3(x-y)+2] =(3x-3y+2)