What is the answer to ln(x-8)+ln(x+1)=0 ?

The answer to ln(x-8)+ln(x+1)=0 is x=(7+sqrt(85))/2

Solve for x: ln(x-8)+ln(x+1)=0

The solution is x=(7+sqrt(85))/2

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ln (x - 8) + ln (x + 1) = 0

x = \frac{7 + 85}{2}

Decimal Notation

x = 8.10977 \dots

Solution steps

ln (x - 8) + ln (x + 1) = 0

Apply log rules

(x - 8) (x + 1) = 1

Solve

(x - 8) (x + 1) = 1 : x = \frac{7 + 85}{2}, x = \frac{7 - 85}{2}

x = \frac{7 + 85}{2}, x = \frac{7 - 85}{2}

Verify Solutions:

x = \frac{7 + 85}{2}

True

, x = \frac{7 - 85}{2}

False

The solution is

x = \frac{7 + 85}{2}

10 \cdot lo g_{10} (4 x) = 25

x, 3 ln (3 x + 9) + 2 = 17

lo g_{10} (x) = 47712

lo g_{10} (\frac{24 - X}{X}) = 456

0 = - lo g_{2} (x + 4)

What is the answer to ln(x-8)+ln(x+1)=0 ?
The answer to ln(x-8)+ln(x+1)=0 is x=(7+sqrt(85))/2
Solve for x: ln(x-8)+ln(x+1)=0
The solution is x=(7+sqrt(85))/2