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Mathematics 20 Online
OpenStudy (anonymous):

The steps to derive the quadratic formula are shown below:

OpenStudy (anonymous):

OpenStudy (anonymous):

Which of the following is the first incorrect step?

OpenStudy (anonymous):

@texaschic101

OpenStudy (anonymous):

@bohotness @StudyGurl14

OpenStudy (texaschic101):

I am wanting to say step 4... because you would have to add (b/2a)^2 to both sides to complete the square see for yourself... http://www.mathsisfun.com/algebra/quadratic-equation-derivation.html

OpenStudy (anonymous):

Thanks so much! =)

OpenStudy (welshfella):

it is step4

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