1) (4x-1)(x-3) = (x-3)(5x+2) 2) (x+3)(x-5)+(x+3)(3x-4)=0
3) (x+6)(3x-1) + x+6=0 4) (x+4)(5x+9) –x - 4= 0
Loga
Sinh Học lớp 12
