Question

括号2x-1的立方=-8,求x

Answer 1

（2x-1）�0�6=-8
两边开立方得
2x-1=-2
2X=-1
X=-1/2

Answer 2

括号2x-1的立方=-8,
两边开立方得：
2x-1=-3
2x=-3+1
2x=-2
x=-1

Answer 3

(2x-1)�0�6=-8=(-2）�0�6
所以2x-1=-2
即2x=-1
x=-0.5