Question

Rút gọn: M = \(\dfrac{1}{3x-2}-\dfrac{4}{3x+2}-\dfrac{3x-6}{4-9x^2}\)

Answer 1

M= 1/ 3x-2 - 4/ 3x +2 - 3x-6/4-9x^2

= 3x+2 - 12x + 8 + 3x-6

= -6x +4

Answer 2

`M=1/(3x-2)-4/(3x+2)-(3x-6)/(4-9x^2)(x ne +-2/3)`

`=(3x+2-4(3x-2)+3x+6)/(9x^2-4)`

`=(-6x+16)/(9x^2-4)`