3(x-5)的立方+375=0
过程,谢谢~~
3(x-5)的立方+375=0
过程,谢谢~~
3(x-5)3+375=0
3(x-5)3=-375
(x-5)3=-125
X-5=-5
X=0
3(x-5)(x-5)(x-5)+375=0
3(x-5)(x-5)(x-5)= -375
(x-5)(x-5)(x-5)= -125
(x-5)= -5 注:负125开三次方
x=0
3(x-5)³+375=0
解:3(x-5)³= -375
(x-5)³= -125
开立方 x-5=-5
x= 0