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8th Class Mathematics Exponents and Power Question Bank Exponents and Powers

  • question_answer
    Simplify \[-{{\left( 3 \right)}^{3}}-{{\left( -3 \right)}^{2}}+{{\left( -2 \right)}^{2}}\]

    A)  \[-\,31\]                        

    B)  \[-\,21\]          

    C)  \[-\,32\]   

    D)  \[-\,33\]

    Correct Answer: C

    Solution :

    (c) \[{{\left( -3 \right)}^{3}}-{{\left( -3 \right)}^{2}}+{{\left( -2 \right)}^{2}}\] \[=-27-(+9)+(+4)\]             \[=-27-9+4=-32\]


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