20wvlomanring 20wvlomanring

22-12-2017
Mathematics

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Select one of the factors of x^2 y^3−11x^2 y+6y^2−66.
a. (x^2y + 6)
b. (x^2y − 6)
c. (y^2 + 11)
d. (y − 3)

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choixongdong choixongdong

22-12-2017

x^2 y^3−11x^2 y+6y^2−66
= x^2y(y^2 - 11) + 6(y^2 - 11)
= (x^2y + 6) (y^2 - 11)

answer
a. (x^2y + 6)

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