Quadratic nth term gcse maths | Revision Server | Page 1

idle musk May 23, 2025, 5:34 PM

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Just a bit stuck with this

mint agate May 23, 2025, 6:05 PM

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the general formula is
an^2+bn+c Where n is the term number
so the first term is equal to a+b+c
so the 2nd term is
4a+2b
etc
so what u wana do find the actual difference in the sequence and between the algebraic one and just compare it

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and the 2nd difference is always equal to 2a

stray prism May 23, 2025, 6:29 PM

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mint agate and the 2nd difference is always equal to 2a

🤔

timber verge May 25, 2025, 1:47 AM

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stray prism 🤔

isnt 1st term a+b+c
2nd term: 3a+b
3rd term: 2a

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as in the a b c values

stray prism May 25, 2025, 8:03 AM

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I think so

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I never use that method

gloomy narwhal May 25, 2025, 8:32 AM

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second difference method solos

clear portal May 25, 2025, 8:34 AM

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they're the same method

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one is just generalised

#Quadratic nth term gcse maths