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8 October, 23:55

Fill in the missing values to make the equations true.

log_4 (7) + log_4 (5) = log_4 (?)

log_8 (11) - log_8 (?) = log_8 (11/5)

2log_9 (3) = log_9 (?)

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  1. 8 October, 23:57
    0
    The main formulas of log are:

    log A + logB = log A*B

    log A - logB = log A/B

    log A ^p = p logA

    so

    log_4 (7) + log_4 (5) = log_4 (7*5) = log_4 (35)

    log_8 (11) - log_8 (5) = log_8 (11/5)

    2log_9 (3) = log_9 (3) ²
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