135k views
25 votes
Solve for x 6x^2=2x-1

User Dvid Silva
by
3.5k points

1 Answer

10 votes

Answer:


\displaystyle x=(1\pm i√(5))/(6)

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

Algebra I

  • Standard Form: ax² + bx + c = 0
  • Quadratic Formula:
    \displaystyle x=(-b\pm√(b^2-4ac) )/(2a)

Algebra II

  • Imaginary Roots: √-1 = i

Explanation:

Step 1: Define

6x² = 2x - 1

Step 2: Rewrite

  1. Subtract 2x on both sides: 6x² - 2x = -1
  2. Add 1 to both sides: 6x² - 2x + 1 = 0

Step 3: Identify Variables

a = 6

b = -2

c = 1

Step 4: Solve for x

  1. Substitute [QF]:
    \displaystyle x=(2\pm√((-2)^2-4(6)(1)) )/(2(6))
  2. Exponents:
    \displaystyle x=(2\pm√(4-4(6)(1)) )/(2(6))
  3. Multiplication:
    \displaystyle x=(2\pm√(4-24) )/(12)
  4. (Square Root) Subtract:
    \displaystyle x=(2\pm√(-20) )/(12)
  5. Factor:
    \displaystyle x=(2\pm √(-1) √(20) )/(12)
  6. Simplify:
    \displaystyle x=(2\pm 2i√(5) )/(12)
  7. Factor GCF:
    \displaystyle x=(2(1\pm i√(5) ))/(12)
  8. Simplify:
    \displaystyle x=(1\pm i√(5))/(6)
User LJNielsenDk
by
4.5k points