Mathematics
Junior High

(2分の1x-3分の1y)(3分の1x-2分の1y)を展開の仕方がわかりません!至急教えてください!!!

Answers

(与式)
=1/2x(1/3x-1/2y)-1/3y(1/3x-1/2y)
=1/6x^2-1/4xy-1/9xy+1/6y^2
=1/6x^2-13/36xy+1/6y^2

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