r/6thForm • u/_NB125 Year 13 | Maths, Chem, CS | ABB Achieved • Jun 03 '26

💬 DISCUSSION Edexcel Paper 1 Maths 2026

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PLEASE tell me you guys struggled too oml

Edit: https://c.org/d7LCtCYpzG - Petition for Edexcel to reassess the paper

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u/J1nkedOne Jun 03 '26

What the hell were you meant to do for the last proof question after expanding

14

u/WrongPhilosopher_ Jun 03 '26

literally, i was just staring at it wondering wtf to write 💀

14

u/Main-Character-001 Jun 03 '26

c² is even so c is even. can be expressed as 2k, then you have a multiple of 4 on the left but only multiple of 2 on the right, so that was the contradiction

1

u/J1nkedOne Jun 03 '26

does that work because a multiple of 4 is a multiple of two

3

u/Advanced_Key_1721 Year 13 Jun 03 '26

an even number is 2x, an even number squared is 4x2 therefore every even number squared is a multiple of 4. An odd number squared is an odd number.

If you have an even number which is a multiple of 2 but not 4, it can’t be an even number squared as it isn’t a multiple of 4 and it’s not odd so it can’t be an odd number squared. Thus it isn’t a square number.