- Forums
###### AS level Maths (pure) - HELP ME wtf is this question

watch this thread

3 weeks ago

So, doing non linear simultaneous equations, if anyone can offer some step by step help that would be really appreciated,

The question is to simultaneously solve: (^2 = squared)

x^2 +8y=13

x+2y=2

I know what the answer is but how do i get there? ( Answer is:

x=-1

x=5

y=3/2

y=-3/2

Please can you help me with the method (Preferably in the simplest way using substitution method) Thank you y'all are angels...if you help me lol

The question is to simultaneously solve: (^2 = squared)

x^2 +8y=13

x+2y=2

I know what the answer is but how do i get there? ( Answer is:

x=-1

x=5

y=3/2

y=-3/2

Please can you help me with the method (Preferably in the simplest way using substitution method) Thank you y'all are angels...if you help me lol

Reply 3

3 weeks ago

Original post by mkr_08

Make the second equation equal to x so x=2-2y then substitute this into the quadratic so (2-2y)^2+8y=13 solve that quadratic normally to find the y values then substitute those into x=2-2y to find your 2 X values.

might be easier to work out 2y in terms of x instead tbf, so 2y = 2-x, and then replacing 8y with 4(2-x), to get a quad with x to solve.

Reply 4

3 weeks ago

Original post by jobajojoba

might be easier to work out 2y in terms of x instead tbf, so 2y = 2-x, and then replacing 8y with 4(2-x), to get a quad with x to solve.

Thank u so much, finally got that hang! @mqb2766 thank u too, you helped me along with the basicalities of the question, you're both angels xxx

- OCR A-level Mathematics A Paper 3 (H240/03) - 20th June 2023 [Exam Chat]
- 2022 Mathematics Applicants
- OCR A Level Computer Science Textbook PDF (PG Online)
- Further Maths AS level
- What's harder Further Maths or Physics AS? Are both similar subjects?
- Self teaching A Level Maths
- GCSE further Maths and A level Maths
- Help me find more questions like this please
- UCAS Clearing 2023 FAQ and Help Megathread
- Got a Ucas or results related question? Ask a Clearing and Applications Advisor here
- Hardest topics in Further Maths
- Starting A-level content early
- A Level Maths vs IB SL AA Maths
- A-level Mathematics Study Group 2023-2024
- A-level Maths Study Group 2022-2023
- I'm worried about my grades
- Further Maths A level
- Best textbook to self teach Maths A level & FM
- How hard is math+further maths?
- A level subject combo help!!!

- GCSE Mathematics Study Group 2023-2024
- Step support programme assignment 7 help pls
- Senior Maths Challenge 2023
- A-level Mathematics Study Group 2023-2024
- Do we have to memorise all physics equations for GCSE 2024 ?
- further maths gcse
- Girls Maths Olympiad 2023
- Electrical Engineering maths help with Desmos graphing calculator
- A Level Maths Moments question
- Discrete maths questions
- Plotting data on a graph.
- Hypothesis Testing
- Problem solving the smc 2023
- Maths trig
- Engineering maths help
- Send me your maths questions!
- Maths nerds!
- A Level Mechanics.
- Help With A level Trig
- which calculator; the fx-991cw or fx-991ex

- Korean/Japanese Studies 2024 Applicants
- Picking courses
- Is my uni application strong and what do I need to work on?
- University of Oxford 2024 Undergraduate Applicants Official Thread
- LNAT Section A advice
- Sevenoaks vs Godolphin and Latymer
- Slightly nicer party holidays
- Big 4 apprenticeships?!?
- Odd personal statement formatting on UCAS site.
- Official: Hull York Medical School A100 2024 Entry Applicants

- ucas
- Breakfast items hurt/heal game!
- The Cambridge College Hurt/Heal Game [part 2]
- British food hurt/heal game!
- The G20 Leaders Hurt/Heal Game
- The Fast Food Restaurants Hurt/Heal game
- The Official Cambridge Applicants for 2024 Entry Thread
- DWP EO Work Coach
- Deloitte Graduate Scheme 2024
- Official London School of Economics and Political Science 2024 Applicant Thread

- BMAT 2024 Entry Discussions Megathread
- Last Person To Post Here Wins (Part 54)
- Official University of Edinburgh Applicant Thread for 2024
- Boys if you have any questions for us girls we will answer
- Official Imperial College London Offer Holders Thread for 2024 entry
- Girls Vs. Boys (Part 45)
- Medicine and biochem
- Procter & gamble
- 2024 Chase Digital Development Programme
- The Forum Games Hurt/Heal Game

- AWE Graduate Scheme 2022
- How to get an overall grade of 2:2 for uni
- KPMG Graduate Applications 2024
- The honorable non-russell group hurt/heal game
- Exam Board Hurt or Heal Game
- Oxford College hurt/heal
- The Sports Hurt/heal game
- The Russell Group hurt/heal game (Part 5)
- Cambridge Demystified - Law
- from all 9s to all Ds, help

The Student Room and The Uni Guide are both part of The Student Room Group.

© Copyright The Student Room 2023 all rights reserved

The Student Room and The Uni Guide are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: Imperial House, 2nd Floor, 40-42 Queens Road, Brighton, East Sussex, BN1 3XB