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OpenStudy (anonymous):
Factor completely: -12x^4y - 9x^3y^2 + 3x^2y^3
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Directrix (directrix):
-3x²y ( 4x - y) (x + y)
Directrix (directrix):
-12x^4y - 9x^3y^2 + 3x^2y^3 = -3x^2y (4x^2 + 3xy - y^2) = -3x²y ( 4x - y) (x + y)
OpenStudy (anonymous):
my guesses were -3x2y(4x2 + 3xy - y2) -3(4x2y + 3x3y2 - x2y3) -3x2y(-4x2 - 3xy + y2) 3x2y(-4x2 + 3xy - y2) did i get any of them right for it?
Directrix (directrix):
-3x^2y (4x^2 + 3xy - y^2) --> the first one
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