求a2-2a-6的最小值已知代数式x2+y2-14x+2y+50的值为0,求x与y的值已知x(x+1)-(x2+y)=-3,求x2+y2-xy的值———2x2=x平方 y2=y平方第三题已知x(x+1)-(x2+y)=-3求(2分之x2=y2)-xy
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 11:05:00
![求a2-2a-6的最小值已知代数式x2+y2-14x+2y+50的值为0,求x与y的值已知x(x+1)-(x2+y)=-3,求x2+y2-xy的值———2x2=x平方 y2=y平方第三题已知x(x+1)-(x2+y)=-3求(2分之x2=y2)-xy](/uploads/image/z/196411-67-1.jpg?t=%E6%B1%82a2-2a-6%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E5%B7%B2%E7%9F%A5%E4%BB%A3%E6%95%B0%E5%BC%8Fx2%2By2-14x%2B2y%2B50%E7%9A%84%E5%80%BC%E4%B8%BA0%2C%E6%B1%82x%E4%B8%8Ey%E7%9A%84%E5%80%BC%E5%B7%B2%E7%9F%A5x%28x%2B1%29-%28x2%2By%29%3D-3%2C%E6%B1%82x2%2By2-xy%E7%9A%84%E5%80%BC%E2%80%94%E2%80%94%E2%80%942x2%3Dx%E5%B9%B3%E6%96%B9+y2%3Dy%E5%B9%B3%E6%96%B9%E7%AC%AC%E4%B8%89%E9%A2%98%E5%B7%B2%E7%9F%A5x%28x%2B1%29-%28x2%2By%29%3D-3%E6%B1%82%282%E5%88%86%E4%B9%8Bx2%3Dy2%29-xy)
xSJ@>&iѣX2}9 E_fނZ/UA*Ef&S*p!^Z'n W|5yVMxyϮkCDTb9SNa'7t!M $hR5):{*ڏa0Mn/@R*6Ad%fShR|'],|O'!Ɖ#3:9o$
[O䨂K`R>\ħUY^f\óuUᏛJFt=p&plL$64