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21-06-2016
Mathematics

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Factor each expression.

Problem: g^2 - 9
Answer: (g + 3) (g - 3)

Respuesta :

21-06-2016

[tex]g^2-9[/tex]
The 9 here could be rewritten as 3^2,

[tex]g^2-3^2[/tex]
Factor the difference in these two squares, you get
[tex](g-3)(g+3)[/tex]

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