(x²+x)(x²+x+1)-6=0因式分解用适当方法解:3(4x²-9)-2(2x-3)=0

问题描述:

(x²+x)(x²+x+1)-6=0因式分解
用适当方法解:3(4x²-9)-2(2x-3)=0

(x²+x)(x²+x+1)-6=0因(x²+x)²+(x²+x)-6=0(x²+x-2)(x²+x+3)=0(x-1)(x+2)(x²+x+3)=0解得x=1或x=-23(4x²-9)-2(2x-3)=03(2x+3)(2x-3)-2(2x-3)=0(2x-3)(6x+9-2)=0(...