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Mathematics 18 Online
OpenStudy (anonymous):

multiply (x+7)(x+9)

OpenStudy (saifoo.khan):

FOIL.

OpenStudy (saifoo.khan):

x^2 + 18x + 63

OpenStudy (anonymous):

x^2 + 16x + 63

OpenStudy (anonymous):

x^2+16x+63

OpenStudy (saifoo.khan):

He's correct.

jimthompson5910 (jim_thompson5910):

(x+7)(x+9) x(x+9)+7(x+9) x^2+9x+7x+63 x^2+16x+63

OpenStudy (anonymous):

i dont have any.. i just used the last bit.

OpenStudy (unklerhaukus):

x^2 +16x+63

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