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Mathematics 25 Online
OpenStudy (anonymous):

k^2-100 factor out

OpenStudy (amistre64):

you gotta be able to notice it as a difference of squares

OpenStudy (amistre64):

(k^2 - 10^2)

OpenStudy (anonymous):

(k+10)(k-10)

OpenStudy (amistre64):

and mm shows how we factor a difference of squares; its just a product of the conjugates

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