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

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Solution for ln(x+1)+ln(x-1)=ln(8) equation:


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

Reorder the terms:
ln(1 + x) + ln(x + -1) = ln(8)
(1 * ln + x * ln) + ln(x + -1) = ln(8)
(1ln + lnx) + ln(x + -1) = ln(8)

Reorder the terms:
1ln + lnx + ln(-1 + x) = ln(8)
1ln + lnx + (-1 * ln + x * ln) = ln(8)
1ln + lnx + (-1ln + lnx) = ln(8)

Reorder the terms:
1ln + -1ln + lnx + lnx = ln(8)

Combine like terms: 1ln + -1ln = 0
0 + lnx + lnx = ln(8)
lnx + lnx = ln(8)

Combine like terms: lnx + lnx = 2lnx
2lnx = ln(8)

Reorder the terms for easier multiplication:
2lnx = 8ln

Solving
2lnx = 8ln

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '-8ln' to each side of the equation.
-8ln + 2lnx = 8ln + -8ln

Combine like terms: 8ln + -8ln = 0
-8ln + 2lnx = 0

Factor out the Greatest Common Factor (GCF), '2ln'.
2ln(-4 + x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'ln' equal to zero and attempt to solve: Simplifying ln = 0 Solving ln = 0 Move all terms containing l to the left, all other terms to the right. Simplifying ln = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-4 + x)' equal to zero and attempt to solve: Simplifying -4 + x = 0 Solving -4 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x = 0 + 4 x = 0 + 4 Combine like terms: 0 + 4 = 4 x = 4 Add '-1x' to each side of the equation. x + -1x = 4 + -1x Combine like terms: x + -1x = 0 0 = 4 + -1x Simplifying 0 = 4 + -1x The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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