2x²-6x=5x-15
问题描述：
2x²-6x=5x-15
(2x-1)(x+1)=(3x+1)(x+1)
答
2x^2-6x=5x-152x^2-6x-5x+15=02x^2-11x+15=0(2x-5)(x-3)=02x-5=0,x-3=0x1=2.5,x2=3 （2x-1)(x+1)=(3x+1)(x+1) (3x+1)(x+1)-（2x-1)(x+1)=0 (3x+1-2x+1)(x+1)=0 (x+2)(x+1)=0 x+2=0,x+1=0x1=-2,x2=-1