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Mike McGarry
Lesson by Mike McGarry
Magoosh Expert
Summary
The Quadratic Formula is a critical tool for solving quadratic equations that cannot be factored or easily solved by completing the square, especially in the context of the SAT exam.
  • The Quadratic Formula is applicable for equations that cannot be factored and do not fit neatly into algebraic patterns.
  • It is essential to convert the quadratic equation into standard form before applying the Quadratic Formula.
  • The discriminant (b squared minus 4ac) under the radical sign in the formula determines the nature of the roots (real or imaginary).
  • The SAT will provide the Quadratic Formula, so memorization is not necessary.
  • Completing the square is an alternative method that can sometimes offer a quicker solution.
Chapters
00:00
Introduction to the Quadratic Formula
00:53
Applying the Quadratic Formula
03:40
Practical Examples
07:25
Summary and SAT Strategy