Ответ:
Объяснение:

ОДЗ: х-3≠0 х≠3.
(x-3)²>0
-∞__+__0__-__6__+__+∞
x∈[0;3)U(3;6].
0\\\frac{x^{2}+4x+5x+20 }{x+4} >0\\\frac{x*(x+4)+5*(x+4)}{x+4} >0\\\frac{(x+4)(x+5)}{(x+4)} >0\\ x+4\neq 0;x\neq -4\\x+5>0\\x>-5." alt="2)\frac{x^{2}+9x+20 }{x+4}>0\\\frac{x^{2}+4x+5x+20 }{x+4} >0\\\frac{x*(x+4)+5*(x+4)}{x+4} >0\\\frac{(x+4)(x+5)}{(x+4)} >0\\ x+4\neq 0;x\neq -4\\x+5>0\\x>-5." align="absmiddle" class="latex-formula">
x∈(-5;-4)U(-4;+∞).

ОДЗ: x-1≠0 x≠1 x+4≠0 x≠-4.
-∞__+__-4__-__0__+__1__-__6__+__+∞
x∈(-4;0]U(1;6].

0" alt="\frac{2*(x^{2}+x-12) }{x^{2}+2*0,5x+0,25+0,75 } <0|:2\\\frac{x^{2}+x+3x-3x-12 }{(x+0,5)^{2} +0,75} <0\\\frac{x^{2} +4x-3*(x+4)}{{(x+0,5)^{2} +0,75}} <0\\\frac{x*(x+4)-3*(x+4)}{{(x+0,5)^{2} +0,75}} <0\\\frac{(x+4)(x-3)}{{(x+0,5)^{2} +0,75}} <0\\{(x+0,5)^{2} +0,75}>0" align="absmiddle" class="latex-formula">
⇒ (x+4)(x-3)<0</p>
-∞__+__-4__-__3__+__+∞
x∈[-4;3].