宸茬煡x虏+x-1=0,姹效椤瑰纺x鲁+2x虏-2镄勫已知x²+x-1=0,求多项式x³+2x²-2的值是 已知x²+x-1=0,求多项式x³+2x²-2的值
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![宸茬煡x虏+x-1=0,姹效椤瑰纺x鲁+2x虏-2镄勫已知x²+x-1=0,求多项式x³+2x²-2的值是 已知x²+x-1=0,求多项式x³+2x²-2的值](/uploads/image/z/15201247-31-7.jpg?t=%E5%AE%B8%E8%8C%AC%E7%85%A1x%E8%99%8F%2Bx-1%3D0%2C%E5%A7%B9%E6%95%88%26%2358943%3B%E6%A4%A4%E7%91%B0%E7%BA%BAx%E9%B2%81%2B2x%E8%99%8F-2%E9%95%84%E5%8B%AB%E5%B7%B2%E7%9F%A5x%26%23178%3B%2Bx-1%3D0%2C%E6%B1%82%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%26%23179%3B%2B2x%26%23178%3B-2%E7%9A%84%E5%80%BC%E6%98%AF+%E5%B7%B2%E7%9F%A5x%26%23178%3B%2Bx-1%3D0%EF%BC%8C%E6%B1%82%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%26%23179%3B%2B2x%26%23178%3B-2%E7%9A%84%E5%80%BC)
宸茬煡x虏+x-1=0,姹效椤瑰纺x鲁+2x虏-2镄勫已知x²+x-1=0,求多项式x³+2x²-2的值是 已知x²+x-1=0,求多项式x³+2x²-2的值
宸茬煡x虏+x-1=0,姹效椤瑰纺x鲁+2x虏-2镄勫
已知x²+x-1=0,求多项式x³+2x²-2的值
是 已知x²+x-1=0,求多项式x³+2x²-2的值
宸茬煡x虏+x-1=0,姹效椤瑰纺x鲁+2x虏-2镄勫已知x²+x-1=0,求多项式x³+2x²-2的值是 已知x²+x-1=0,求多项式x³+2x²-2的值
x³+2x²-2=(x²+x-1)(x+1)-1=0*(x+1)-1=-1 谢谢采纳!
x³+2x²-2=(x²+x-1)(x+1)-1=0*(x+1)-1=-1
额......妹子我今年初一。。。。。。