1,(2x-1)^2=9 2,3x^2-7x=0
问题描述:
1,(2x-1)^2=9 2,3x^2-7x=0
答
1,(2x-1)^2=9
2x-1=3或2x-1=-3
2x=4或2x=-2
x1=2 x2=-1
2,3x^2-7x=0
x(3x-7)=0
x1=0 x2=7/3x^2-2倍根号5x+1=0和3x^2+8x-3=0谢谢啊不回答追问里的新问题,请采纳了再提问,谢谢!