Решить неравенства (1/9)^x-6*(1/3)^x-27<=0<br>
(1/9)^x-(6/18)^x-27<=0; 6/18=1/3<br>(1/9)/(1/3)-27<=0;<br>(1/9)/(3/1)-27<=0;<br>3/9-27<=0;<br>1/3-27<=0; |:3<br>1-9<=0; <br>-8<=0; <br> [-8;0] ____________-8\\\\\\\\\\\0______>x Ответ:[-8;0]