1.)
0\\10x>-2\\x>-\frac{2}{10}\\x>-0,2" alt="y=log_{\sqrt{5}}(2+10x)\\2+10x>0\\10x>-2\\x>-\frac{2}{10}\\x>-0,2" align="absmiddle" class="latex-formula">
2.)
0\\0,1x>20\\x>200" alt="y=logx_{\sqrt{7}}(20+0,1x)\\20+0,1x>0\\0,1x>20\\x>200" align="absmiddle" class="latex-formula">
3.)
0\\10x>24\\x>2,4" alt="y=log_{0,8} (10x-24)\\10x-24>0\\10x>24\\x>2,4" align="absmiddle" class="latex-formula">
4.)
0\\(x+4)(x-1)>0\\" alt="y=log_5(x^{2}+3x-4)\\x^{2}+3x-4>0\\(x+4)(x-1)>0\\" align="absmiddle" class="latex-formula">
∈(-∞;-4)∪(1;+∞)