Question
Factorise:
40 + 3x - x2
40 + 3x - x2
✓
Answer
40 + 3x - x2
= 40 + 8x - 5x - x2
= 8(5 + x) - x(5 + x)
= (5 + x)(8 - x)
= 40 + 8x - 5x - x2
= 8(5 + x) - x(5 + x)
= (5 + x)(8 - x)
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