Thu gọn biểu thức \(\dfrac{1}{{x - 1}} - \dfrac{x}{{{x^2} + x + 1}}\)
A.\(\dfrac{{2x + 1}}{{{{\left( {x - 1} \right)}^3}}}\)
B.\(\dfrac{{2x}}{{{x^3} - 1}}\)
C.\(\dfrac{{2x + 1}}{{{x^3} - 1}}\)
D.\(\dfrac{{2x + 1}}{{{{\left( {x - 1} \right)}^2}}}\)
A.\(\dfrac{{2x + 1}}{{{{\left( {x - 1} \right)}^3}}}\)
B.\(\dfrac{{2x}}{{{x^3} - 1}}\)
C.\(\dfrac{{2x + 1}}{{{x^3} - 1}}\)
D.\(\dfrac{{2x + 1}}{{{{\left( {x - 1} \right)}^2}}}\)
Loga
Hóa Học lớp 12
