用因式分解法解下列方程(1)2(5x-1)=3(1-5x)(2)(2x+1)-x-4x-4=0
问题描述:
用因式分解法解下列方程(1)2(5x-1)=3(1-5x)(2)(2x+1)-x-4x-4=0
答
1)2(5x-1)=3(1-5x) 2(5x-1)+3(5x-1)=0 (5x-1)(10x-2+3)=0 (5x-1)(10x+1)=0 x=1/5或 x=-1/10 (2x+1)-x-4x-4=0 (2x+1)-(x+4x+4)=0 (2x+1)-(x+2)=0 (2x+1-x-2)(2x+1+x+2)=0 (x-1)(3x+3)=0 x=1或x=-1...