下列多项式次数为3的是:A -5x²+6x-1 B πx²+x-1 C a²b+ab+b2 D x²y²-2xy-1
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![下列多项式次数为3的是:A -5x²+6x-1 B πx²+x-1 C a²b+ab+b2 D x²y²-2xy-1](/uploads/image/z/8322809-41-9.jpg?t=%E4%B8%8B%E5%88%97%E5%A4%9A%E9%A1%B9%E5%BC%8F%E6%AC%A1%E6%95%B0%E4%B8%BA3%E7%9A%84%E6%98%AF%EF%BC%9AA+-5x%26%23178%3B%2B6x-1+B+%CF%80x%26%23178%3B%2Bx-1+C+a%26%23178%3Bb%2Bab%2Bb2+D+x%26%23178%3By%26%23178%3B-2xy-1)
下列多项式次数为3的是:A -5x²+6x-1 B πx²+x-1 C a²b+ab+b2 D x²y²-2xy-1
下列多项式次数为3的是:A -5x²+6x-1 B πx²+x-1 C a²b+ab+b2 D x²y²-2xy-1
下列多项式次数为3的是:A -5x²+6x-1 B πx²+x-1 C a²b+ab+b2 D x²y²-2xy-1
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