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Mathematics 16 Online
OpenStudy (anonymous):

factor completely. x^2-25k^2+12x+36

OpenStudy (turingtest):

that IS supposed to a k, right? Combine like terms:\[x^2+12x+36-25k^2=(x+6)^2-(5k)^2\]This is a "difference of squares", so we factor this as\[(x+6-5k)(x+6+5k)\]post if you do not understand this last step.

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