B. X2 – 7X + 10 = 0A. 7X2 – 28 = 0C. X3 + 3X = 3X2 + 1B. 23X X( 2− =4)...
4. Tìm x:
b. x
2
– 7x + 10 = 0
a. 7x
2
– 28 = 0
c. x
3
+ 3x = 3x
2
+ 1
b.
2
3
x x
(2
− =
4
)0
4. Tìm x:
b. x
2
– 7x + 10 = 0
a. 7x
2
– 28 = 0
c. x
3
+ 3x = 3x
2
+ 1
b.
2
3
x x
(2
− =
4
)0