Respuesta :

choixongdong

(x+3)(x-3)

=x^2 + 3x -3x - 9

=x^2 - 9

Answer

B) x^2 -9

Peredhel

Hi!

We can remove the parentheses.

x+3·x-3

Group together like terms.

x·x+3·-3

x²-9

The answer is B) x²-9

Hope this helps! :)

-Peredhel

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