A Level Maths Made Easy - The Discriminant

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[cyvnqsu]

i know its a bit late but i wanted to thank you for your amazing videos it really helped me with all the higher grade questions and in the end i got the grade 9 i wanted. thanks again

[yanmaksymov]

I think you forgot to multiply -10 by -10 on 33:35 because it would make +100 and then 100-76 = 24

[bx]

17:48 is it the *x* variable or *n* variable?
23:16 is the '12' positive or negative? [Answer at 23:40]

[zamdoolittle]

For the quadratic inequalities video, if you only have one inequality do you have to put curly brackets around that or just say x is defined by.. without placing the brackets or the U

[ojphviz]

Hi this question may be a bit off topic, for the whole of A-Level maths, would you recommend getting a graphic calculator or use the scientific casio-fx991ex if you already have one, and thanks for the vid :)

[zamdoolittle]

@34:20, by one solution does it mean one of the values of m that you've worked out, if put back into the equation give an answer of 0 and the other value of m doesn't?