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A  \(S=\left[ -4;\frac{4}{3} \right]\)                  

B

 \(S=\left[ -\frac{1}{3};4 \right]\)                  

C \(S=\left[ -\frac{4}{3};3 \right]\)                   

D \(S=\left[ -\frac{4}{3};4 \right]\)

A  \(S=\left( -\infty ;-1 \right]\cup \left[ 2;+\infty  \right)\)        

B \(S=\left[ -1;2 \right]\)                                   

C  \(S=\left[ -2;1 \right]\)            

D  \(S=\left( -\infty ;-2 \right]\cup \left[ 1;+\infty  \right)\)

A  \(S=\left[ -21;7 \right]\)                     

B  \(S=\left[ -3;1 \right]\)                       

C  \(S=\left( -\infty ;7 \right]\cup \left[ 21;+\infty  \right)\)       

D \(S=\left( -\infty ;14 \right]\)

A \(S=\left( -3;+\infty  \right)\)              

B \(S=\left( -3;-2 \right)\)           

C  \(S=\left( -3;-2 \right)\bigcup \left( 0;+\infty  \right)\)           

D  \(S=\left( -\infty ;-3 \right)\bigcup \left( -2;0 \right)\)

A \(S=(1,\frac{5}{3})\)  .                        

B \(S=(1,+\infty )\) .                  

C \(S=(-\infty ,-1)\)                    

D  Một đáp án khác.

A  \(S=\left[ -3;5 \right]\)                        

B  \(S=\left( -3;5 \right)\)                       

C  \(S=\left( -\infty ;-3 \right]\cup \left[ 5;+\infty  \right)\)        

D  \(S=\left[ -5;3 \right]\)

A  \(S=\left( -\infty ;3 \right]\cup \left[ 4+\sqrt{17};+\infty  \right).\)                           

B  \(S=\left( -\infty ;4-\sqrt{17} \right]\cup \left[ 3;+\infty  \right).\)

C  \(S=\left( -\infty ;4-\sqrt{17} \right]\cup \left[ 4+\sqrt{17};+\infty  \right).\)                       

D  Đáp án khác

A  \(S=\left( -1;2 \right)\)                                   

B  \(S=\left( -\infty ;5 \right)\)                

C  \(S=\left( -\infty ;\frac{3}{2} \right)\cup \left( \frac{11}{3};+\infty  \right)\)                     

D  \(S=\left( -1;+\infty  \right)\)

A \(S=\left( -\infty ;5 \right)\)                           

B \(S=\left( -\infty ;25 \right)\)             

C  \(S=R\)                                  

D \(S=\varnothing \)

A \(S=\left( -\infty ;-5 \right)\cup \left( -1;2 \right)\cup \left( 4;+\infty  \right)\)                                    

B \(S=\left( -1;2 \right)\)

C  \(S=\left( -\infty ;-4 \right]\cup \left( -1;2 \right)\cup \left[ 5;+\infty  \right)\)                                   

D  \(S=\left( -\infty ;5 \right]\)

A \(S=\left( -\infty ;-1 \right]\cup \left[ \frac{3}{2};3 \right)\)  

B \(S=\left( -\infty ;-1 \right)\cup \left[ \frac{3}{2};3 \right)\)  

C  \(S=\left[ -1;3 \right)\)                                   

D  \(S=\left( -\infty ;-1 \right)\)

A \(S=\left[ \frac{-1-\sqrt{17}}{4};\frac{-1+\sqrt{17}}{4} \right]\)                                       

B \(S=\left[ -6;-1 \right]\cup \left[ \frac{-1+\sqrt{17}}{4};+\infty  \right)\)

C  \(S=\left[ -6;\frac{-1-\sqrt{17}}{4} \right]\cup \left[ \frac{-1+\sqrt{17}}{4};+\infty  \right)\)                   

D  Đáp án khác

A \(S=\left( 0;+\infty  \right)\)              

B \(S=(1;2)\)                              

C  \(S=\left[ 0;+\infty  \right)\backslash \left\{ 1;2 \right\}\)     

D \(S=\left[ 0;+\infty  \right)\)

A \(S=\left[ -\frac{1}{2};+\infty  \right)\backslash \left\{ 1 \right\}\)               

B  \(S=\left[ -\frac{1}{2};+\infty  \right)\)        

C \(S=\left( -\frac{1}{2};+\infty  \right)\)                     

D  \(S=\left[ \frac{1}{2};+\infty  \right)\)

A \(S=\left\{ -1 \right\}\cup \left[ \frac{3+\sqrt{17}}{2};+\infty  \right)\)                                           

B  \(S=\left( -\infty ;-2 \right]\cup \left\{ -1 \right\}\cup \left[ \frac{3+\sqrt{17}}{2};+\infty  \right)\)

C  \(S=\left( -\infty ;-2 \right]\cup \left[ \frac{3+\sqrt{17}}{2};+\infty  \right)\)                                  

D  \(S=\left( -\infty ;-2 \right]\cup \left\{ -1 \right\}\)

A   \(S=\left[ -4;0 \right]\)                                  

B \(S=\left( -5;-1 \right)\)                       

C \(S=\left( -5;+\infty  \right)\)            

D \(S=\left( -\infty ;-1 \right)\)

A  \(S=\left( -\infty ;-3 \right)\cup \left[ 0;+\infty  \right)\)                                

B  \(S=\left( -3;6 \right)\)

C  \(S=\left( -2;-\frac{1}{2} \right]\)                                         

D  \(S=\left( -\infty ;-2 \right]\cup \left[ -\frac{1}{2};+\infty  \right)\)

A  \(S=\left( -\infty ;-1 \right]\cup \left[ 2;\sqrt{17} \right]\)     

B \(S=\left( -\infty ;\frac{1-\sqrt{17}}{2} \right]\cup \left[ \frac{1+\sqrt{17}}{2};\sqrt{17} \right]\)

C  \(S=\left[ \frac{1-\sqrt{17}}{2};\frac{1+\sqrt{17}}{2} \right]\)                 

D  \(S=\left[ -1;2 \right]\)

A \(D=\left( -\infty ;8 \right]\)                

B  \(D=\left( -\infty ;8 \right)\)              

C \(D=R\)                      

D  Đáp án khác

A \(D=\left[ -\frac{1}{3};3 \right]\)                                           

B \(D=\left( -\infty ;-\frac{1}{3} \right]\cup \left[ 3;+\infty  \right)\)

C  \(D=\left( -\frac{1}{3};3 \right)\)                                         

D  \(D=\left( -\infty ;-\frac{1}{3} \right)\cup \left( 3;+\infty  \right)\)