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OpenStudy (anonymous):
Multiply: (9x + 6)(9x - 6). A. 81x^2 - 36 B. 81x^2 + 12x - 36 C. 18x^2 - 12x + 36 D. 18x^2 - 12
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OpenStudy (hoblos):
(9x + 6)(9x - 6) = (9x)^2 - 6^2 = 81x^2 -36
OpenStudy (hoblos):
A
OpenStudy (anonymous):
|dw:1331231811050:dw| well when you use FOIL you will get A. i have put in the problem done with work so you can see.
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