Question
Factorise:
x2 - 22x + 120
x2 - 22x + 120
✓
Answer
x2 - 22x + 120
= x2 - 10x - 12x + 120
= x(x - 10) - 12(x - 10)
= (x - 10)(x - 12)
= x2 - 10x - 12x + 120
= x(x - 10) - 12(x - 10)
= (x - 10)(x - 12)
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