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4 votes
Factorise
x² - 9x + 20


1 Answer

2 votes

Answer:

(x - 5)(x - 4)

Explanation:


{x}^(2) - 9x + 20 \\ \\ = {x}^(2) - 5x - 4x + 20 \\ \\ = x(x - 5) - 4(x - 5) \\ \\ = (x - 5)(x - 4)

User Passiondroid
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