A.academic
B.grade
C.behave
D.examination

A.\(\sqrt {26} \)
B.\(2\sqrt 5 \)
C.\(10\)
D.\(5\)

A.\(R = 3\)
B.\(R = 5\)
C.\(R = 15\)
D.\(R = \frac{3}{5}\)

A.\(C\left( { - 10;\,\, - 2} \right)\) hoặc \(C\left( {1;\,\, - 1} \right)\)
B.\(C\left( { - 2;\; - 10} \right)\) hoặc \(C\left( {1;\; - 1} \right)\)
C.\(C\left( { - 2;\,\,10} \right)\) hoặc \(C\left( {1;\; - 1} \right)\)
D.\(C\left( {2;\; - 10} \right)\) hoặc \(C\left( {1;\; - 1} \right)\)

A.\(x-2y-3 = 0;{\rm{ }}x-2y + 7 = 0\)
B.\(x-2y + 3 = 0;{\rm{ }}x--2y + 7 = 0\)
C.\(x-2y-3 = 0;{\rm{ }}x-2y - 7 = 0\)
D.\(x-2y + 3 = 0;{\rm{ }}x-2y - 7 = 0\)

A.\(1\)
B.\(2\)
C.\(3\)
D.\(4\)

A.\(x - y + 1 = 0\)
B.\(5x + 3y + 9 = 0\)
C.\(3x + 3y - 5 = 0\)
D.\(x + y + 3 = 0\)

A.\(3x - 4y + 8 = 0\) hoặc \(3x - 4y + 12 = 0\)
B.\(3x - 4y - 8 = 0\) hoặc \(3x - 4y + 12 = 0\)
C.\(3x - 4y - 8 = 0\) hoặc \(3x - 4y - 12 = 0\)
D.\(3x - 4y + 8 = 0\) hoặc \(3x - 4y - 12 = 0\)

A.\(P = 72\)
B.\(P =  - 132\)
C.\(P = 132\)
D.\(P =  - 72\)

A.\(12x + 4y - 3 = 0\)
B.\(2x - 6y + 7 = 0\)
C.\(12x + 6y - 7 = 0\)        \(2x + 6y - 7 = 0\)
D.\(2x + 6y - 7 = 0\)