2^(x^2+x-1)3^(x^2+x+1)<=1.5*216^(x+1)<br>2^(x^2+x-1)3^(x^2+x+1)<=3/2*{6^3}^(x+1)<br>2*2^(x^2+x-1)3^(x^2+x+1)/3<={6^3}^(x+1)<br>2^(x^2+x)3^(x^2+x)<=6^3*(x+1)<br>6^(x^2+x)<=6^3*(x+1)<br>x^2+x<=3x+3<br>x^2-2x+3<=0<br>(x-3)(x+1)<=0<br>метод интервалов
===========-1======3=======
++++++++++++ ---------- ++++++
x=[-1 3]