Предмет: Алгебра, автор: Аноним

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Ответы

Автор ответа: ATLAS

$-x> frac{2x-3}{x}$

$frac{2x-3}{x}+x<0|*xneq0$

$frac{x^{2}+2x-3}{x}<0$

$frac{(x-1)(x+3)}{x}<0$

_ + - +

______________-3_____________0_______________1____________________

$(-infty;-3)cup(0;1)$

(2x-5)(x+7)(x+1)>0

2(x-2,5)(x+7)(x+1)>0

- + - +

_______ -7______________ -1_____________ 2,5____________________

$(-7;-1)cup(2,5;+infty)$

$(sqrt{6}-2,5)(7-6x)(2sqrt{7}-5)<0$

$sqrt{6}-2,5<0$ ,т.к. $2,5^{2}=6,25$

$sqrt{7}-5<0$ , т.к. $5^{2}=25$

7-6x=6(7/6 -x)<0

+ -

------------ 7/6---------------

-*+*-=+ -*-*-=-

$(7/6;+infty)$

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