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math logs

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solve 3^(2x+1) = 9^(2x-1)
using base 3 logs

  • math logs -

    3^(2x+1) = 3^2(2x-1)
    easy way
    2x+1 = 4x-2
    2z=3
    x= 3/2
    using logs base 3
    2x+1 = (2x-1)log3(9)
    2x+1 = (2x-1)log3(3^2)
    2x+1 = (2x-1)(2) log3(3)
    2x+1 = 2(2x-1) same as above

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