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(3x^3y^2)^4÷(6x^2y)^2-(-1/3x^3y^2)^2·(1/2xy)^2
人气:458 ℃ 时间:2020-04-07 09:20:33
解答
原式=(81x^12y^8)÷(36x^4y^2)-(1/9x^6y^4)(1/4x^2y^2)
=9/4x^8y^6-1/36x^8y^6
=20/9x^8y^6
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