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Mathematics 21 Online
OpenStudy (anonymous):

x^4y+216xy4 factor

OpenStudy (anonymous):

common factor is xy = xy(x^3 + 216y^3) = xy(x^3 + (6y)^3) sum of cubes: = xy(x + 6y)(x^2 + 6yx + 36y^2)

OpenStudy (anonymous):

erm: xy(x + 6y)(x^2 - 6yx + 36y^2) my bad

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