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Mathematics 14 Online
OpenStudy (secret-ninja):

Am I right? Find the product of (x + 3)(x - 3). x^2 - 6x + 9 x^2 + 6x + 9 x^2 + 9 x^2 - 9

OpenStudy (secret-ninja):

I think its D.

OpenStudy (alexandervonhumboldt2):

D

OpenStudy (alexandervonhumboldt2):

(a-b)*(a+b)=a^2-b^2

OpenStudy (secret-ninja):

Thank you. :)

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