(3x-2y)(9xde2次方+4y的2次方)(-2y-3x)=?
(3x-2y)(9xde2次方+4y的2次方)(-2y-3x)=?
数学人气:958 ℃时间:2019-10-17 06:42:57
优质解答
16Y4-81X4过程-(3x+2y)(3x-2y)(9x2+4y2)=-(9x2-4y2)(9x2+4y2)=-(81x4-16y4)=16y4-81x4
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