<span>(m-9)/(m^2-30m+81)>0
</span>
<span>(m-9)/(m-3)(m-27)>0</span>
_____<0_______3_____>0______9____<0_______27___>0_______
F(0)<0
m>27 m>3^3 3^x>3^3 x>3
3<m<9 3<3^x<3^2 1<x<2
((√a+√b-2√b)(√a+√b+2√b)/(√a-√b)(√a+√b)) *(√a+3√b)/√ab) *(√a+√b)/√ab)(√a+3√b)²=
=(√a-√b)(√a+3√b)(√a+3√b)(√a+√b)/(√a-√b)(√a+√b)√ab(√a+3√b)²√ab=1/ab
10x² -x-2=0 ;
D =1² -4*10(-2) =81 =9²;
x(1) =(1-9)/2*10 = -2/5 * * * - 0,4 * * *
x(2) =(1+9)/2*10 = 1/2 * * * 0,5 * * *
43+34=77; 0,63-0,43=0,2; 0,12*54=6,48
(если я так поняла)