若x-3y=5,求x^2-3xy-15y的值.拜托~ ~
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 01:16:41
若x-3y=5,求x^2-3xy-15y的值.拜托~~若x-3y=5,求x^2-3xy-15y的值.拜托~~若x-3y=5,求x^2-3xy-15y的值.拜托~~原式=x(x-3y)-15y=5x-1
若x-3y=5,求x^2-3xy-15y的值.拜托~ ~
若x-3y=5,求x^2-3xy-15y的值.
拜托~ ~
若x-3y=5,求x^2-3xy-15y的值.拜托~ ~
原式=x(x-3y)-15y
=5x-15y
=5(x-3y)
=5*5
=25
若xy=2(x+y),求 (3x-5xy+3y)÷(-x+3xy-y) 的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
若X分之一减y分之一=3,求(5x+2xy-5y)/(x-4xy-y)
若x分之一-y分之一=3,求x-4xy-y分之5x+2xy-5y
若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y
若1/x-1/y=3,求5x+2xy-5y/x-4xy-y的值
若x分之一-y分之一=3,求x-4xy-y分之5x+2xy-5y
若x-3y=5,求x^2-3xy-15y的值.拜托~ ~
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
若y-x/xy=3,求分式2x+3xy-2y/x-2xy-y
xy/x+y=2 求3x-5xy+3y/-x+3xy-y的值?
已知X+Y分之XY=2,求-X+3XY-Y分之3X+5XY+3Y
已知Y-x=3xy,求(5x+3xy-5y)÷(x-2xy-y)
已知xy/x+y=3,求代数式2x-5xy+2y/x-3xy+y
已知xy/x+y=2,求代数式3x-5xy+3y/-x+2xy-y的值
已知X-XY-2Y=0求2X+3XY-Y/X-2XY+5Y
已知xy=2(x+y),求(5x-xy+5y)/(3xy-x-y)的值