The Quadratic Formula

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GCSE Maths revision tutorial video.

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14:41 why don't you round the 1 to a 2?

saffron
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5:09 i get 22 instead when i type this into my calculator. Is there an error in the way i am doing it in?

raaidahmed
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How did you get a calculator on the computer?

g.ch.
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Make a video about the Quadratic Formula and simplifying to the nearest surd.

angelostsaka