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Mathematics 19 Online
OpenStudy (anonymous):

Multiply. (x + 11)(x + 9)

OpenStudy (anonymous):

\[x^2 + 20x + 99\]

OpenStudy (anonymous):

Thank you!!!

OpenStudy (amistre64):

then just multiply them together x + 11 x + 9 ------------ 9x+99 x^2+11x ------------- x^2 +20x+99

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