Algebra 7
2 marks · NormalSolve the quadratic equation by factorisation.
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x = 3 or x = 4
Also accept: x = 4 or x = 3
Common mistakes: Incorrect factors (e.g. (x-6)(x-2)); Arithmetic errors in solving x values
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Marking points
M1 · 1 mark · Attempts to factorise into brackets.
A1 · 1 mark · Both correct solutions: and . Order does not matter.
Worked solution
The equation is .
Factorise: .
So, or .
Therefore, or .