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Автор - dianaketchh

Срочно помогите! Задание 2.4

Ответ

Автор - rina2403k

 frac{x + 2}{4x - 1}  +  frac{x - 2}{4x + 1}  =  frac{6x + 3}{16x {}^{2} - 1 }  = 0 \  frac{x + 2}{4x - 1}  +  frac{x - 2}{4x + 1}  -  frac{6x + 3}{(4x - 1)(4x + 1)}  = 0 \  frac{(4x + 1)(x + 2) + (4x - 1)(x - 2) - (6x  +  3)}{(4x - 1)(4x + 1)}  = 0 \ frac{4x {}^{2} + 8x + x + 2 + 4x {}^{2}   - 8x - x + 2 - 6x - 3}{(4x - 1)(4x + 1)}  = 0 \  frac{8x {}^{2} + 1 - 6x }{(4x - 1)(4x + 1)}  = 0 \  frac{8x { }^{2}  - 6x  + 1}{(4x - 1)(4x + 1)}  = 0 \  frac{8x {}^{2} - 2x - 6x + 1 }{(4x - 1)(4x + 1)}  = 0 \  frac{2x(4x - 1) - (4x - 1)}{(4x - 1)(4x + 1)}  = 0 \  frac{(4x - 1)(2x - 1)}{(4x - 1)(4x  + 1)}  = 0 \  frac{2x - 1}{4x + 1}  = 0 \ 2x - 1 = 0 \ 2x = 1 \ x =  frac{1}{2}

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