N5 Maths: factorising a difference of two squares.
In the SQA specification, the given format is p²𝑥² − a².
2016 P2 Q4: 3𝑥² − 48
2017 P2 Q9: 4𝑥² − 25
2019 P2 Q13: 4p² − 9
2021 P2 Q3: 3a² − 75
2022 P2 Q12: b² − 9
2023 P2 Q12: 𝑥² − 16
So would 9 − x² or 𝑥² − y² be unfair? Thoughts?
#ScottishMaths
10 months ago