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? asked in Science & MathematicsMathematics · 8 years ago

Need help with logarithmic equation.?

log5 (x+3)+log5 (x-4) = log5 (x+2)

Round off answer to 4 decimal places.

All of the 5's by the "log" are supposed to be small and lower indented. I didn't know how to do that on here. Hope that makes sense.

Update:

The best way I can think to explain how the 5's are supposed to be is like logv5, like the opposite of how you would put x^2. I really hope I'm making sense, ha ha.

1 Answer

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  • ?
    Lv 7
    8 years ago
    Favorite Answer

    (x+3)(x-4) = x+2

    x^2-2x-14 = 0

    x = [2±sqrt(60)]/2

    x = 1+sqrt(15)

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