已知a/b=2/3,求 a+b/b?已知x²=3,求 x+x/1/x-x/1?(x减x分之一 分之 x加八分之一)已知x/y=3,求 x²+2xy-3y²/x²-sy+y²?已知1/x+1/y=5,求 2x-3xy+2y/x+2xy+y?已知x²+3x+1=0,求 x²+1/x²?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 01:24:58
![已知a/b=2/3,求 a+b/b?已知x²=3,求 x+x/1/x-x/1?(x减x分之一 分之 x加八分之一)已知x/y=3,求 x²+2xy-3y²/x²-sy+y²?已知1/x+1/y=5,求 2x-3xy+2y/x+2xy+y?已知x²+3x+1=0,求 x²+1/x²?](/uploads/image/z/12625642-10-2.jpg?t=%E5%B7%B2%E7%9F%A5a%2Fb%3D2%2F3%2C%E6%B1%82+a%2Bb%2Fb%3F%E5%B7%B2%E7%9F%A5x%26%23178%3B%3D3%2C%E6%B1%82+x%2Bx%2F1%2Fx-x%2F1%3F%28x%E5%87%8Fx%E5%88%86%E4%B9%8B%E4%B8%80+%E5%88%86%E4%B9%8B+x%E5%8A%A0%E5%85%AB%E5%88%86%E4%B9%8B%E4%B8%80%29%E5%B7%B2%E7%9F%A5x%2Fy%3D3%2C%E6%B1%82+x%26%23178%3B%2B2xy-3y%26%23178%3B%2Fx%26%23178%3B-sy%2By%26%23178%3B%3F%E5%B7%B2%E7%9F%A51%2Fx%2B1%2Fy%3D5%2C%E6%B1%82+2x-3xy%2B2y%2Fx%2B2xy%2By%3F%E5%B7%B2%E7%9F%A5x%26%23178%3B%2B3x%2B1%3D0%2C%E6%B1%82+x%26%23178%3B%2B1%2Fx%26%23178%3B%3F)
xVN$E~NLL7ESt#1lrS}C"#˲AH"F >]3_թfoԛS|_sS,/Y6I>(xF1#B<}J更Sz\}xA;2P&0\H"VPT gI9K&aDչWI߇\O.8??gSډG/~Zć*0Gl>=pY##q[3"ccFA