What is the answer to ln(x+7)+ln(x-7)=0 ?

The answer to ln(x+7)+ln(x-7)=0 is x=5sqrt(2)

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ln(x+7)+ln(x-7)=0

ln (x + 7) + ln (x - 7) = 0

x = 52

Decimal Notation

x = 7.07106 \dots

Solution steps

ln (x + 7) + ln (x - 7) = 0

Apply log rules

(x + 7) (x - 7) = 1

Solve

(x + 7) (x - 7) = 1 : x = 52, x = - 52

x = 52, x = - 52

Verify Solutions:

x = 52

True

, x = - 52

False

The solution is

x = 52

5 lo g_{10} (x - 2) = 0

x^{4} ln (x^{- 4}) = 0

lo g_{3} (3 x + 1) + 4 lo g_{3} (2) = 2

lo g_{a} (5) = 1

x, 0.35 = lo g_{10} (x)

What is the answer to ln(x+7)+ln(x-7)=0 ?
The answer to ln(x+7)+ln(x-7)=0 is x=5sqrt(2)
Solve for x: ln(x+7)+ln(x-7)=0
The solution is x=5sqrt(2)