作业帮求2x²-[x²-2(x²-3x-1)-3(x²-1-2x)]的值,其中：x=½
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/26 23:42:38
![求2x²-[x²-2(x²-3x-1)-3(x²-1-2x)]的值,其中：x=½](/uploads/image/z/1988219-11-9.jpg?t=%E6%B1%822x%26%23178%3B-%5Bx%26%23178%3B-2%28x%26%23178%3B-3x-1%29-3%28x%26%23178%3B-1-2x%29%5D%E7%9A%84%E5%80%BC%2C%E5%85%B6%E4%B8%AD%EF%BC%9Ax%3D%26%23189%3B)
x){ɨBMZ70Ҁ+t
5u|C]
Z6yںɎ̪J[XZ$SD;ZRRHAif]K=S<;u p\
求2x²-[x²-2(x²-3x-1)-3(x²-1-2x)]的值,其中：x=½
求2x²-[x²-2(x²-3x-1)-3(x²-1-2x)]的值,其中：x=½
求2x²-[x²-2(x²-3x-1)-3(x²-1-2x)]的值,其中：x=½
-19/2 ,即 -9.5