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Mathematics 20 Online
OpenStudy (anonymous):

Select the correct product. (2x + 9)(x + 1) A.2x2 + 11x + 9 B.3x2 + 11x + 9 C.2x2 - 7x + 9 D.2x2 + 11x + 10 __ Please Help?

OpenStudy (anonymous):

We can do this in a very simple way: We know that the answer cannot be C because there are no minus signs in the original problem. We also know that it can not be B because the first term, when distributed out 2x^2. This leaves us with A and D.

OpenStudy (anonymous):

Distributing we get. \[2x^2+11x+9\]

OpenStudy (anonymous):

With the intermediate steps: \[2x^2+9x+2x+9 \rightarrow 2x^2+11x+9\]

OpenStudy (anonymous):

So the answer is A?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Thanks

OpenStudy (anonymous):

Welcome :)

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