Chọn câu sai ABBA = 1 nbsp ABCD = CDAB AB CD + EF = A
A.\(\frac{A}{B}.\frac{B}{A} = 1\)
B.\(\frac{A}{B}.\frac{C}{D} = \frac{C}{D}.\frac{A}{B}\)
C.\(\frac{A}{B}.\left( {\frac{C}{D} + \frac{E}{F}} \right) = \frac{A}{B}.\frac{C}{D} + \frac{E}{F}\)
D.
A.\(\frac{A}{B}.\frac{B}{A} = 1\)
B.\(\frac{A}{B}.\frac{C}{D} = \frac{C}{D}.\frac{A}{B}\)
C.\(\frac{A}{B}.\left( {\frac{C}{D} + \frac{E}{F}} \right) = \frac{A}{B}.\frac{C}{D} + \frac{E}{F}\)
D.
Loga
Hóa Học lớp 12
