yt #1 and #2

• Quadratic equation


  A mathematical sentence of the second degree
• Identifying a quadratic equation


  1. Arrange into standard form ax² + bx + c = 0

  2. a should not be 0

  3. a is a positive real number
• Parts of a quadratic equation


  • a (quadratic term)
  • b (linear term)
  • c (constant term)
• If a = 0, the equation is no longer quadratic but linear
• If b = 0, the equation can still be quadratic as long as a and c are not 0
• If c = 0, the equation can still be quadratic as long as a and b are not 0