初中数学题2道 急!(1)已知代数式2x²+ax-y+6-2bx²+3x-5y-1的值与字母x的取值无关,求三分之一a³-2b²-¼a³+3b²+2a²的值 (2)某乒乓球训练馆准备购买10副某种品牌的乒乓球
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![初中数学题2道 急!(1)已知代数式2x²+ax-y+6-2bx²+3x-5y-1的值与字母x的取值无关,求三分之一a³-2b²-¼a³+3b²+2a²的值 (2)某乒乓球训练馆准备购买10副某种品牌的乒乓球](/uploads/image/z/1552771-19-1.jpg?t=%E5%88%9D%E4%B8%AD%E6%95%B0%E5%AD%A6%E9%A2%982%E9%81%93+%E6%80%A5%21%EF%BC%881%EF%BC%89%E5%B7%B2%E7%9F%A5%E4%BB%A3%E6%95%B0%E5%BC%8F2x%26sup2%3B%2Bax-y%2B6-2bx%26sup2%3B%2B3x-5y-1%E7%9A%84%E5%80%BC%E4%B8%8E%E5%AD%97%E6%AF%8Dx%E7%9A%84%E5%8F%96%E5%80%BC%E6%97%A0%E5%85%B3%2C%E6%B1%82%E4%B8%89%E5%88%86%E4%B9%8B%E4%B8%80a%26sup3%3B-2b%26sup2%3B-%26frac14%3Ba%26sup3%3B%2B3b%26sup2%3B%2B2a%26sup2%3B%E7%9A%84%E5%80%BC+%282%29%E6%9F%90%E4%B9%92%E4%B9%93%E7%90%83%E8%AE%AD%E7%BB%83%E9%A6%86%E5%87%86%E5%A4%87%E8%B4%AD%E4%B9%B010%E5%89%AF%E6%9F%90%E7%A7%8D%E5%93%81%E7%89%8C%E7%9A%84%E4%B9%92%E4%B9%93%E7%90%83)
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