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If a= 2b+6 then find the …

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If a= 2b+6 then find the value ofa3-8b3-36ab-216

    • Posted by H . 8 years, 7 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Naveen Sharma 8 years, 7 months ago

    Given : a = 2b+6 

    To find : Value of {tex}a^3 -8b^3-36ab-216{/tex}

    Solution : put value of a in given expression.

     {tex}(2b+6)^3 -8b^3-36(2b+6)b-216{/tex}

     {tex}= 8b^3+216+72b^2+216b-8b^3-72b^2-216b-216\\ = 0{/tex}

     

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