2. Sample Papers
  3. 9th Class
  4. Mathematics

9th Class Mathematics Sample Paper Mathematics Sample Paper-4

  • question_answer
    If \[\mathbf{a}+\mathbf{b}=\mathbf{7}\]and\[\mathbf{ab}=\mathbf{12}\], then find the value of \[\left( {{\mathbf{a}}^{\mathbf{2}}}-\mathbf{ab}+{{\mathbf{b}}^{\mathbf{2}}} \right)\]

    A) 31                    

    B) 13        

    C) 15                    

    D) 21

    E) None of these                             

    Correct Answer: B

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