ln(x^2-7)=ln(4x-2)

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Solution for ln(x^2-7)=ln(4x-2) equation:


Simplifying
ln(x2 + -7) = ln(4x + -2)

Reorder the terms:
ln(-7 + x2) = ln(4x + -2)
(-7 * ln + x2 * ln) = ln(4x + -2)
(-7ln + lnx2) = ln(4x + -2)

Reorder the terms:
-7ln + lnx2 = ln(-2 + 4x)
-7ln + lnx2 = (-2 * ln + 4x * ln)
-7ln + lnx2 = (-2ln + 4lnx)

Solving
-7ln + lnx2 = -2ln + 4lnx

Solving for variable 'l'.

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

Add '2ln' to each side of the equation.
-7ln + 2ln + lnx2 = -2ln + 2ln + 4lnx

Combine like terms: -7ln + 2ln = -5ln
-5ln + lnx2 = -2ln + 2ln + 4lnx

Combine like terms: -2ln + 2ln = 0
-5ln + lnx2 = 0 + 4lnx
-5ln + lnx2 = 4lnx

Add '-4lnx' to each side of the equation.
-5ln + -4lnx + lnx2 = 4lnx + -4lnx

Combine like terms: 4lnx + -4lnx = 0
-5ln + -4lnx + lnx2 = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(-5 + -4x + x2) = 0

Factor a trinomial.
ln((-1 + -1x)(5 + -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 '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Add 'x' to each side of the equation. -1x + x = 1 + x Combine like terms: -1x + x = 0 0 = 1 + x Simplifying 0 = 1 + 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 '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Add 'x' to each side of the equation. -1x + x = -5 + x Combine like terms: -1x + x = 0 0 = -5 + x Simplifying 0 = -5 + 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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