Roots and Discriminant | C1 Edexcel January 2013 Q9 | ExamSolutions

Past exam paper question on roots and discriminant of a quadratic equation.
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[@ExamSolutions_Maths]

Pleased to hear you were able to follow it.

[@BallyBoy95]

Your explanations are crystal clear as ever. ;)

[@tpthpt5973]

Actually we should exclude value -3. This is because when k=-3 the equation is not quadratic. It is linear: 6x-3=5 which has only one solution (x=4/3).

[@ExamSolutions_Maths]

Very good

[@ExamSolutions_Maths]

No, you need to complete the range of values

[@dominicedgeworth8835]

you are brilliant mate

[@indster619]

for part b could you leave it at k=6 or k=-4 like you had at 08:45

[@indster619]

alright thanks

[@indster619]

yeah realised now that i misread the Q

[@Steeeph1713]

According to my copy of this paper, this is Q9, not Q8. Just letting you know in case the title of this video is a typing mistake :)

[@dejialonge]

This is Question 9 not Question 8

[@ExamSolutions_Maths]

Thanks, now changed.