A.\(5\)
B.\(8\)
C.\(9\)
D.\(1\)

A.\(\frac{3}{5}\)
B.\(\frac{3}{8}\)
C.\(\frac{3}{7}\)
D.\(\frac{3}{4}\)

A.\( - \frac{9}{2}\)
B.\( - \frac{9}{4}\)
C.\( - \frac{9}{5}\)
D.\( - \frac{9}{7}\)

A.\(x \in \left\{ { - 2;\,\, - 1;\,\,1;\,\,2} \right\}\)
B.\(x \in \left\{ { - 3;\,\, - 1;\,\,1;\,\,2} \right\}\)
C.\(x \in \left\{ { - 2;\,\, - 1;\,\,1;\,\,4} \right\}\)
D.\(x \in \left\{ { - 2;\,\, - 1;\,\,1;\,\,5} \right\}\)

A.\(x = 3\).
B.\(x = 7\).
C.\(x = 9\).
D.\(x = 10\).

A.\(\frac{9}{{16}}\)
B.\(\frac{9}{{17}}\)
C.\(\frac{9}{{13}}\)
D.\(\frac{9}{{26}}\)

A.\(\frac{{25}}{{16}}\)
B.\(\frac{{25}}{{26}}\)
C.\(\frac{{25}}{{86}}\)
D.\(\frac{{25}}{{12}}\)

A.Lá
B.Hoa
C.Rễ
D.Thân.

A.Khai báo y tế.
B.Khẩu trang.
C.Không hút thuốc lá.
D.Khử khuẩn.

A.\(\dfrac{{Ab}}{{aB}}\)
B.\(\dfrac{{aB}}{{aB}}\)
C.AABb
D.aaBb.