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Mathematics 7 Online
OpenStudy (anonymous):

(3k+5)^2

OpenStudy (anonymous):

9k^2+30k+25

OpenStudy (anonymous):

its (a+b)^2 formula.....

OpenStudy (anonymous):

i.e., (a+b)^2=a^2+b^2+2ab

OpenStudy (anonymous):

foil, combine like terms, simplify :)

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