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How do you multiply #3xy(-x^4-4x^2 y+5xy^2) #?

1 Answer

Jun 26, 2015

# = color(blue)(-3x^5y - 12x^3.y^2 + 15x^2y^3#

Explanation:

# color(blue)(3xy)(-x^4-4x^2y+5xy^2)#
# =color(blue)(3xy) . (-x^4) + color(blue)(3xy) . (-4x^2y) + color(blue)(3xy) . (5xy^2)#

# = color(blue)(-3x^5y - 12x^3.y^2 + 15x^2y^3#

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