已知代数式3x^2-2y+6的值为8,那么代数式3xy^2-2xy-3/2y^2-2x+y+2的值为

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/12 11:46:49

3xy^2-2xy-3/2y^2-2x+y+2
=x(3y^2-2y)-1/2(3y^2-2y)-2x+2
=(x-1/2)(3y^2-2y)-2(x-1/2)+1
=(x-1/2)(3x^2-2y-2)+1
因为3x^2-2y+6=8
所以3x^2-2y-2=0
故：3xy^2-2xy-3/2y^2-2x+y+2=1

已知代数式3y²-2y+6的值为8,那么代数式3xy²-2xy-2/3y²-2x+y+2的已知代数式3y²-2y+6的值为8,那么代数式3xy²-2xy-3/2y²-2x+y+2的已知2x+y=8,xy=7,那么代数式3xy+4x+2y的值为已知x=y+3,则代数式x²-2xy+y²的值为已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值已知X²+XY=3,XY+Y²=2,则代数式X²+2xy的值为已知xy/x+y=2,求代数式3x-5xy+3y/-x+2xy-y的值已知xy/x+y=2,求代数式3x-xy+3y/-x+3xy-y的值已知x-y=2xy,求代数式3x-5xy-3y/x+xy-y的值已知代数式3x^2-2y+6的值为8,那么代数式3xy^2-2xy-3/2y^2-2x+y+2的值为已知y-x=3xy,则代数式2x-14xy-2y分之x-2xy-y的值为多少? 已知y-x=3xy,则代数式2x-14xy-2y/x-2xy-y的值为