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10 February, 06:16

7^x^2=9^x

how do I solve this using logs

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Answers (1)
  1. 10 February, 08:42
    0
    Apply lg on both sides.

    lg7^x^2 = lg9^x

    Bring the power forward.

    x^2lg7 = xlg9

    x^2/x = lg9/lg7

    x = lg9/lg7 = 1.13
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