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9th Class Mathematics Sample Paper Mathematics Sample Paper-4

  • question_answer
    Factorize. \[\mathbf{a}-b-{{\mathbf{a}}^{\mathbf{2}}}+{{b}^{\mathbf{2}}}\]

    A) \[\left( a+b \right)\left( 1-a-b \right)\]      

    B) \[\left( a+b \right)\left( 1+a+b \right)\]

    C) \[\left( a-b \right)\left( 1+a+b \right)\]       

    D) \[\left( a-b \right)\left( 1-a-b \right)\]

    E) None of these

    Correct Answer: D

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