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

Question

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

dananhnhu · Answer

1/3x-2 - 1/3x+2 - 3x-6/4-9x&sup2;     = 1/3x-2 - 1/3x+2 - 3x-6/(2-3x)(2+3x)     = - (2+3x)/(2-3x)(2+3x) - (2-3x)/(2-3x)(2+3x)- 3x-6/(2-3x)(2+3x)     = (-2 -3x -2 +3x -3x +6)/(2-3x)(2+3x)     =  (2-3x)/(2-3x)(2+3x)     = 1/(2+3x)

mytam · Answer

1/3x-2 - 1/3x+2 - 3x-6/4-9x&sup2;      = 1/3x-2 - 1/3x+2 - 3x-6/(2-3x)(2+3x)     = - (2+3x)/(2-3x)(2+3x) - (2-3x)/(2-3x)(2+3x)- 3x-6/(2-3x)(2+3x)     = (-2 -3x -2 +3x -3x +6)/(2-3x)(2+3x)     =  (2-3x)/(2-3x)(2+3x)     = 1/(2+3x)             Ch&uacute;c bạn học tốt ^^

1/3x-2 – 1/3x+2 – 3x-6/4-9x^2

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