Question

tìm x 

5) 
4x x 5 x 4x 3 5
6) 
2
2
x 2 x 1 6
7) 
2
3
(3 2) 3 .
4
x x x   
8) (3x + 1). (2x- 3) – 6x.(x + 2) = 16

Answer 1

8: =>6x^2-9x+2x-3-6x^2-12x=16

=>-19x=19

=>x=-1