(1)(-2x²y³)².(xy) · (xy)³ (2)(2a+3b)(2a-b)(3)5x²(x+1)(x-1)(4)(2x+y-1)²(5)59.8×60.2(6)198²(7)(2a)³·b四(8) (-2/3 a七b五)÷3/2a²b五(9)(6/5 a³x
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![(1)(-2x²y³)².(xy) · (xy)³ (2)(2a+3b)(2a-b)(3)5x²(x+1)(x-1)(4)(2x+y-1)²(5)59.8×60.2(6)198²(7)(2a)³·b四(8) (-2/3 a七b五)÷3/2a²b五(9)(6/5 a³x](/uploads/image/z/4316830-70-0.jpg?t=%EF%BC%881%EF%BC%89%EF%BC%88-2x%26%23178%3By%26%23179%3B%29%26%23178%3B.%28xy%29+%C2%B7+%28xy%29%26%23179%3B+%282%29%282a%2B3b%29%282a-b%29%283%295x%26%23178%3B%EF%BC%88x%2B1%EF%BC%89%EF%BC%88x-1%EF%BC%89%EF%BC%884%EF%BC%89%EF%BC%882x%2By-1%EF%BC%89%26%23178%3B%EF%BC%885%EF%BC%8959.8%C3%9760.2%EF%BC%886%EF%BC%89198%26%23178%3B%EF%BC%887%EF%BC%89%EF%BC%882a%EF%BC%89%26%23179%3B%C2%B7b%E5%9B%9B%EF%BC%888%EF%BC%89+%EF%BC%88-2%2F3+a%E4%B8%83b%E4%BA%94%EF%BC%89%C3%B73%2F2a%26%23178%3Bb%E4%BA%94%EF%BC%889%EF%BC%89%EF%BC%886%2F5+a%26%23179%3Bx)
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