5x2-20x-12=0
1个回答
关注
展开全部
答案-0.1,x=-0.1,解:10-20x-12=0,-2-20x=0,-2-20x+20x=0+20x,-2=20x,20x=-3,20x➗20=-2➗20,x=-0.1
咨询记录 · 回答于2022-12-28
5x2-20x-12=0
答案-0.1,x=-0.1,解:10-20x-12=0,-2-20x=0,-2-20x+20x=0+20x,-2=20x,20x=-3,20x➗20=-2➗20,x=-0.1
答案-0.1,x=-0.1,解:10-20x-12=0,-2-20x=0,-2-20x+20x=0+20x,-2=20x,20x=-3,20x➗20=-2➗20,x=-0.1方程的解是x=-0.1