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15 votes
Solve for X


lnx^(2) =-2

please show steps

I have the answer,

I just want to know how to do this :)

2 Answers

7 votes

Answer:

Explanation:

lnx^n=nlnx


\ln x^2=-2\\2\ln x=-2\\\\\ln x=-1\\\\x>0\\x=e^(-1)\\or~x=(1)/(e)

User Lliane
by
4.6k points
8 votes

Answer:


x = \pm e^(-1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Algebra I

  • Solving quadratics
  • Multiple roots

Algebra II

  • Logarithms
  • Euler's number e

Explanation:

Step 1: Define


\displaystyle ln(x^2) = -2

Step 2: Solve for x

  1. Raise both sides by e:
    e^(\displaystyle ln(x^2)) = e^(-2)
  2. Simplify equation:
    x^2 = e^(-2)
  3. Square root both sides:
    x = \pm e^(-1)
User Nanor
by
5.9k points