Đề thi HK1 Toán 9 - Sở GD&ĐT Nam Định - Năm 2017 -...

A \(4\)

B \( - 4\)

C \( \pm 4\)         

D \(256\)

A \(x \ge 2018\)

B \(x \ne 2018\)  

C \(x > 2018\)

D \(x < 2018\)

A \(2\)

B \(2\sqrt 3  - 2\)             

C \(2\sqrt 3  + 2\)

D \(2 - \sqrt 3 \)  

A \(m = 2017\)          

B \(m = 0\)          

C \(m > 2017\)

D \(m < 2017\)

A \(\frac{3}{4}\)

B \(\frac{3}{5}\)

C \(\frac{4}{3}\)

D \(\frac{4}{5}\)  

A \(6,5cm\)

B \(7,2cm\)

C \(7,5cm\)

D \(7,7cm\)

A \(0\)

B \(1\)  

C \(2\)

D \(3\)

A \(P = \frac{3}{{\sqrt x  + 3}}\)

B \(P = \frac{3}{{\sqrt x  - 3}}\)   

C \(P = \frac{{3\left( {\sqrt x  + 3} \right)}}{{\sqrt x  - 3}}\)   

D \(P = \frac{1}{{\sqrt x  + 3}}\)

A \(P = 3 - 3\sqrt 3 \)

B \(P = \frac{{6 - 3\sqrt 3 }}{2}\)   

C \(P = \frac{{3 - 3\sqrt 3 }}{2}\)

D \(P = 6 - 3\sqrt 3 \)

A \(m = 1\)  

B \(m = 2\)  

C \(m = - 1\)  

D \(m = - 2\)  

A \(m = \frac{1}{2}\)   

B \(m = \frac{3}{2}\)   

C \(m = \frac{5}{2}\)   

D \(m = \frac{2}{3}\)   

A \(\left( {1;\,1} \right)\)

B \(\left( {1;\, - 1} \right)\)   

C \(\left( { - 1;\,1} \right)\)   

D \(\left( { - 1;\, - 1} \right)\)

A \(\frac{3}{2}\)    

B \(\frac{5}{2}\)    

C \(\frac{{ - 3}}{2}\)   

D \(\frac{{ - 1}}{2}\)

A \(S = \left\{ {11;\,2} \right\}\)

B \(S = \left\{ {9;\,1} \right\}\)   

C \(S = \left\{ {3;\,1} \right\}\)   

D \(S = \left\{ {5;\,2} \right\}\)