ln(2x^2+5x+2)=2(ln(x+2))

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Solution for ln(2x^2+5x+2)=2(ln(x+2)) equation:


Simplifying
ln(2x2 + 5x + 2) = 2(ln(x + 2))

Reorder the terms:
ln(2 + 5x + 2x2) = 2(ln(x + 2))
(2 * ln + 5x * ln + 2x2 * ln) = 2(ln(x + 2))
(2ln + 5lnx + 2lnx2) = 2(ln(x + 2))

Reorder the terms:
2ln + 5lnx + 2lnx2 = 2(ln(2 + x))
2ln + 5lnx + 2lnx2 = 2((2 * ln + x * ln))
2ln + 5lnx + 2lnx2 = 2((2ln + lnx))
2ln + 5lnx + 2lnx2 = (2ln * 2 + lnx * 2)
2ln + 5lnx + 2lnx2 = (4ln + 2lnx)

Solving
2ln + 5lnx + 2lnx2 = 4ln + 2lnx

Solving for variable 'l'.

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

Add '-4ln' to each side of the equation.
2ln + 5lnx + -4ln + 2lnx2 = 4ln + -4ln + 2lnx

Reorder the terms:
2ln + -4ln + 5lnx + 2lnx2 = 4ln + -4ln + 2lnx

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

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

Add '-2lnx' to each side of the equation.
-2ln + 5lnx + -2lnx + 2lnx2 = 2lnx + -2lnx

Combine like terms: 5lnx + -2lnx = 3lnx
-2ln + 3lnx + 2lnx2 = 2lnx + -2lnx

Combine like terms: 2lnx + -2lnx = 0
-2ln + 3lnx + 2lnx2 = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(-2 + 3x + 2x2) = 0

Factor a trinomial.
ln((-2 + -1x)(1 + -2x)) = 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 '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Add 'x' to each side of the equation. -1x + x = 2 + x Combine like terms: -1x + x = 0 0 = 2 + x Simplifying 0 = 2 + 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 '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 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 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Add '2x' to each side of the equation. -2x + 2x = -1 + 2x Combine like terms: -2x + 2x = 0 0 = -1 + 2x Simplifying 0 = -1 + 2x 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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