(4x+3)(7x+2)=0
4x+3=0或7x+2=0
x1=-3/4, x2=-2/7
(x-1)的平方-4=0
(x-1+2)(x-1-2)=0
(x+1)(x-3)=0
x1=-1, x2=3
(3)3x(x+2)=5(x+2)
(x+2)(3x-5)=0
x1=-2, x2=5/3
希望能帮你忙,不懂请追问,懂了请采纳,谢谢
(4x+3)(7x+2)=0
4x+3=0或7x+2=0
x1=-3/4, x2=-2/7
(x-1)的平方-4=0
(x-1+2)(x-1-2)=0
(x+1)(x-3)=0
x1=-1, x2=3
(3)3x(x+2)=5(x+2)
(x+2)(3x-5)=0
x1=-2, x2=5/3
希望能帮你忙,不懂请追问,懂了请采纳,谢谢