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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
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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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