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Factorise x² - 9x + 20
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7 votes
Factorise x² - 9x + 20

User Amr SubZero
by
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1 Answer

10 votes

Explanation:

Given

x² - 9x + 20

= x² - ( 4 + 5) x + 20

= x² - 4x - 5x + 20

= x ( x - 4) - 5 ( x - 4)

= (x - 4)(x - 5)

Hope it will help you :)

User Lukas Wiklund
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