Cha1rdomacsel Cha1rdomacsel

06-12-2016
Mathematics

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Question Help!

Factor the trinomial completely.

x squared + 2x -8

Verified Answer :

06-12-2016

x^2 + 2x -8
The factors of 8 are 2 and 4, and to get 2x we need 2 and 4 to either add up to or subtract to result in 2.
4 - 2 = 2. We also know this is right because 4 x -2 = -8. So the answer is:
(x + 4)(x - 2)

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