Tìm x, biết:a) 2-x = 2
(
x
-
2
)
3
; b) 8
x
3
- 72x = 0;c)
(
x
-
1
,
5
)
6
+
2
(
1
,
5
-
x
)
2
= 0; d) 2
x
3
+3
x
2
+3 + 2x = 0;e)
x
3
- 4x- 14x(x - 2) = 0; g)
x
2
(x + 1)- x(x + 1) + x(x - 1) =...
Đọc tiếp
Tìm x, biết:
a) 2-x = 2 ( x - 2 ) 3 ; b) 8 x 3 - 72x = 0;
c) ( x - 1 , 5 ) 6 + 2 ( 1 , 5 - x ) 2 = 0; d) 2 x 3 +3 x 2 +3 + 2x = 0;
e) x 3 - 4x- 14x(x - 2) = 0; g) x 2 (x + 1)- x(x + 1) + x(x - 1) = 0.
b) 
d) 
Bài 2: Tìm x biết: