Rút gọn biểu thức: A = (9/ x^3 -9x + 1/x+3) : (x-3/x^2 + 3x - x/3x+9)
Giải thích
A=9x3−9x+1x+3:x2+3x1−3x=9xx2−9+1x+3:xx+31−3x=9+xx−3xx−3x+3.1−3xxx+3=x2+3x+9.1−3xx+32.x−3x2
A=9x3−9x+1x+3:x2+3x1−3x=9xx2−9+1x+3:xx+31−3x=9+xx−3xx−3x+3.1−3xxx+3=x2+3x+9.1−3xx+32.x−3x2