22.3 Solving quadratic equations by factoring

Solving quadratic equations by factoring

Review the chapter on “Factoring” to refresh your memory if you don’t quite remember how to factor polynomials. It will definitely help you solve the questions in this lesson!

Lessons

Notes:
Difference of Squares: a2b2=(a+b)(ab)a^2-b^2=(a+b)(a-b)
    • a)
      Solve by factoring a trinomial: 2x212x+10=02x^2-12x+10=0
    • b)
      Solve by factoring a difference of squares: 25x249=025x^2-49=0
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Solving quadratic equations by factoring

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