方法如下所示。请认真查看。祝你学习愉快,每天过得充实,学业进步!
满意请釆纳!
(3x-1)² - [2(x+3)]²=0(3x-1+2x+6)(3x-1-2x-6)=0(5x+5)(x-7)=0x1= - 1,x2=7
解得3x-1=2x+6 得x=7或者3x-1=-2x-6 得x=-1