【(y+2x)(2x-y)+2(3x-2y)^2-（11x-3y)(2x-3y）】÷2y 其中x是最小的质数,y是x的倒数的相反数!

来源：学生作业学帮网编辑：学帮网时间：2024/05/30 00:09:43

x=2,y=-1/2
【(y+2x)(2x-y)+2(3x-2y)^2-（11x-3y)(2x-3y）】÷2y
=(4x^2-y^2+18x^2-24xy+8y^2-22x^2+39xy-9y^2)÷2y
=(-2y^2+15xy)÷2y
=-y+15x/2
=1/2+15
=31/2

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