用因式分解法解3(x+2)²-6(x+2)=0
问题描述:
用因式分解法解3(x+2)²-6(x+2)=0
答
3(x+2)²-6(x+2)=0
3(x+2)(x+2-2)=0
3x(x+2)=0
x=0或x=-2
答
3(x+2)²-6(x+2)=0
3(x+2)(x+2-2)=0
3(x+2)x=0
x1=0,x2=-2