Algebra 5
2 marks · NormalFactorise fully:
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Show answer
(x-5)(x+5)
Also accept: (x+5)(x-5)
Common mistakes: (x+25)
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Identifies difference of squares or equivalent factorisation strategy.
A1 · 1 mark · Gives correct factorisation: (x-5)(x+5) or (x+5)(x-5).
Worked solution
by the difference of two squares.