Lesson 55.notebook November 12, 2015teachers.oregon.k12.wi.us/rosemeyer/Alg II/5-5 Cont.pdfLesson...
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Lesson 55.notebook 1 November 12, 2015
Transcript of Lesson 55.notebook November 12, 2015teachers.oregon.k12.wi.us/rosemeyer/Alg II/5-5 Cont.pdfLesson...
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If a quadratic equation is NOT a perfect square, we can use a method called Completing the Square to rewrite the equation so the trinomial is a perfect
square that we can factor.
We can use this strategy to create a perfect square trinomial from ANY quadratic equation!
Completing
the
Square
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2x2 7x + 5 = 0
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Completing the Square with imaginary roots: In the past, we asserted that quadratic functions that did not cross the x‐axis had no real roots. Now that we have language to talk about imaginary numbers, roots that are not real, we can go on to find all the roots, real and imaginary.
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