... 3xo 2- 3 = I =) Xo = # r**(hrfl,! S 4*a2, a -^ ti aa a (.r < -2 ;x 2 -l)1.00THt.Ntiu 4-Jf 4x+4=ol-=t 16<xz -3 x+4Biit phuong tinh lu6n th6a m5n.f _, t*.F< ;-& gt; ... x' -3 x+2r-16-sJ* 1r+4 +x2 -3 x+4[*. u-s,a=2 4"{y, -{ J )-9 <=> x, -* -! . o .=r l ^ - o, : (*uu mfln dk x6c ttir16 I 6+J53l_r> ;- L+Sưu tầm: Nguyễn Minh Hải\\Xdt ... x, -ix-r2zo<=>l ^-, :*lx(LZrH2,Ni5u q-J*z*+q>g4=1 +.*.* 0Khi d6 hai vii cua BPT di cho ludn duong, binh phuong hai vi6 ta c6:BPT <=> x' -3 x+2r-16-sJ*...