ln(x^2-9)=ln(12-4x)

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Solution for ln(x^2-9)=ln(12-4x) equation:


Simplifying
ln(x2 + -9) = ln(12 + -4x)

Reorder the terms:
ln(-9 + x2) = ln(12 + -4x)
(-9 * ln + x2 * ln) = ln(12 + -4x)
(-9ln + lnx2) = ln(12 + -4x)
-9ln + lnx2 = (12 * ln + -4x * ln)
-9ln + lnx2 = (12ln + -4lnx)

Solving
-9ln + lnx2 = 12ln + -4lnx

Solving for variable 'l'.

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

Add '-12ln' to each side of the equation.
-9ln + -12ln + lnx2 = 12ln + -12ln + -4lnx

Combine like terms: -9ln + -12ln = -21ln
-21ln + lnx2 = 12ln + -12ln + -4lnx

Combine like terms: 12ln + -12ln = 0
-21ln + lnx2 = 0 + -4lnx
-21ln + lnx2 = -4lnx

Add '4lnx' to each side of the equation.
-21ln + 4lnx + lnx2 = -4lnx + 4lnx

Combine like terms: -4lnx + 4lnx = 0
-21ln + 4lnx + lnx2 = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(-21 + 4x + x2) = 0

Factor a trinomial.
ln((-7 + -1x)(3 + -1x)) = 0

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 '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Add 'x' to each side of the equation. -1x + x = 7 + x Combine like terms: -1x + x = 0 0 = 7 + x Simplifying 0 = 7 + x The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 3

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Add 'x' to each side of the equation. -1x + x = -3 + x Combine like terms: -1x + x = 0 0 = -3 + x Simplifying 0 = -3 + x 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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