化简2x-[3y-5x-(2x-7y)],得什么
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/29 18:53:01
化简2x-[3y-5x-(2x-7y)],得什么
化简2x-[3y-5x-(2x-7y)],得什么
化简2x-[3y-5x-(2x-7y)],得什么
原式=2x-(3y-5x-2x+7y)=2x-3y+5x+2x-7y=(2+5+2)x-(3+7)y=9x-10y
化简:3(x-y)²-7(x-y)+ 2(x-y)²+5(x-y)
化简3(x-y)-7(x--y)+2(y-x)
化简:5(x-y)+2(x+y)-3(x-y)
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
化简:[(x+2y)^2-(x+y)(3x-y)-5y^2]/2x
化简y(x+y)+(x+y)(x-y)-x^2
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
整体去括号;化简[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)
整体去括号;[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)化简
把(x-y)看作一个整体,化简:(1)5(x-y)+2(x-y)-4(x-y);(2)3(x-y²-4(x-y)+7(x-y)-6(x-y)
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
化简(X-2Y)-(Y-3X)
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
(2x-3y)-(5x-y)
(2X-3y)-(5x-y)
(2x-5y)(3x+y)