Saturday, April 17, 2021

GC-Algebra I Lesson 19-24: Factoring, Quadratic, complete square

Quadratic parabola: two solutions, one solution, no solution

  • Factoring, 
  • Quadratic, 
  • complete square 

LESSON 19 Factoring Trinomials 





LESSON 20 Quadratic Equations—Factoring 






LESSON 21 Quadratic Equations—The Quadratic Formula 







LESSON 22 Quadratic Equations—Completing the Square











Don't confused with solution of 9, it is ±3, square root of 9 is 3.



3x2 + 12x = 36  -> x2 + 4x = 12, need to divide coefficient  3 first when doing complete square.

LESSON 23 Representations of Quadratic Functions 








LESSON 24 Quadratic Equations in the Real World 



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