1.张华再一次测验中计算一个多项式加上5xy-3yz+2xz时,误认为减去此式,计算出错误结果为2xy-6yz+xz,试求出正确答案2.观察下列一串单项式的特点:xy,-2x²y,4x³y,-8x(四的平方)y,16x(五的平
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![1.张华再一次测验中计算一个多项式加上5xy-3yz+2xz时,误认为减去此式,计算出错误结果为2xy-6yz+xz,试求出正确答案2.观察下列一串单项式的特点:xy,-2x²y,4x³y,-8x(四的平方)y,16x(五的平](/uploads/image/z/2539510-70-0.jpg?t=1.%E5%BC%A0%E5%8D%8E%E5%86%8D%E4%B8%80%E6%AC%A1%E6%B5%8B%E9%AA%8C%E4%B8%AD%E8%AE%A1%E7%AE%97%E4%B8%80%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E5%8A%A0%E4%B8%8A5xy-3yz%2B2xz%E6%97%B6%2C%E8%AF%AF%E8%AE%A4%E4%B8%BA%E5%87%8F%E5%8E%BB%E6%AD%A4%E5%BC%8F%2C%E8%AE%A1%E7%AE%97%E5%87%BA%E9%94%99%E8%AF%AF%E7%BB%93%E6%9E%9C%E4%B8%BA2xy-6yz%2Bxz%2C%E8%AF%95%E6%B1%82%E5%87%BA%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%882.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E4%B8%80%E4%B8%B2%E5%8D%95%E9%A1%B9%E5%BC%8F%E7%9A%84%E7%89%B9%E7%82%B9%EF%BC%9Axy%2C-2x%26%23178%3By%2C4x%26%23179%3By%2C-8x%EF%BC%88%E5%9B%9B%E7%9A%84%E5%B9%B3%E6%96%B9%EF%BC%89y%2C16x%EF%BC%88%E4%BA%94%E7%9A%84%E5%B9%B3)
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