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Subjects>Math>Math & Arithmetic

What are the factors of x2 plus 4x-21?

Anonymous

∙ 14y ago

Updated: 10/31/2022

x2 + 4x - 21 = (x + 7)(x - 3).

The trick is to find 2 numbers which sum to 4 and have a product of -21.

Wiki User

∙ 14y ago

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