下面的题目能用因式分解的就请用因式分解.
问题描述:
下面的题目能用因式分解的就请用因式分解.
1、(X-1)²-4=0
2、9t²-(t-1)²=0
3、X²-5X-6=0
4、X²+12X+27=0
5、X(X-3)=0
6、(2X-1)(X+3)=4
答
(x-1)²-4=0x-1=±2x=3或x=-19t²-(t-1)²=0(3t+t-1)(3t-t+1)=0t=1/4或t=-1/2x²-5x-6=0(x-6)(x+1)=0x=6或x=-1x²+12x+27=0(x+3)(x+9)=0x=-3或x=-9x(x-3)=0x=0或x=3(2x-1)(x+3)=42x²+6...