8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    Factorize the following expression:\[{{(2a+3b+c)}^{2}}-20a10c-30b+21\].

    A) \[\left( 2a+3b+c-7 \right)\left( 2a+3b+c-3 \right)\]

    B) \[\left( 2a3b+c+7 \right)\left( 2a3b+c-3 \right)\]

    C) \[\left( 2a+3bc-7 \right)\left( 2a+3b+c-7 \right)\]

    D) \[\left( a+3b+c-7 \right)\left( a+3b+c-3 \right)\]

    E) None of these

    Correct Answer: A


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