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How do you factorise X squared -X-20?

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Anonymous

∙ 12y ago
Updated: 4/28/2022

As the coefficient of x2 is 1, you just have to look for factors of 20 which differ by 1.

These are obviously 4 and 5 so: (x - 5)(x + 4)

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Wiki User

∙ 12y ago
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