Tackling this @openmiddle problem about discriminant today. Didn't take too long before they realised to find equal roots first #teach180 http://pic.twitter.com/Vy7y5rreKq
— Julie Morgan (@fractionfanatic) August 31, 2017
Tackling this @openmiddle problem about discriminant today. Didn't take too long before they realised to find equal roots first #teach180 http://pic.twitter.com/Vy7y5rreKq
— Julie Morgan (@fractionfanatic) August 31, 2017
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