问题 解答题

(9x3y2-6x2y+3xy2)÷(-3xy)

答案

(9x3y2-6x2y+3xy2)÷(-3xy),

=9x3y2÷(-3xy)-6x2y÷(-3xy)+3xy2÷(-3xy),

=-3x2y+2x-y.

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