(3x-2y)(9xde2次方+4y的2次方)(-2y-3x)=?
问题描述:
(3x-2y)(9xde2次方+4y的2次方)(-2y-3x)=?
答
16Y4-81X4过程-(3x+2y)(3x-2y)(9x2+4y2)=-(9x2-4y2)(9x2+4y2)=-(81x4-16y4)=16y4-81x4
(3x-2y)(9xde2次方+4y的2次方)(-2y-3x)=?
16Y4-81X4过程-(3x+2y)(3x-2y)(9x2+4y2)=-(9x2-4y2)(9x2+4y2)=-(81x4-16y4)=16y4-81x4