单项式-3x²减去单项式-4x²y,-5x²,2x²y的和,列算式为___,化简后的结果是____求具体内容,运算结果和过程,怎样做题
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![单项式-3x²减去单项式-4x²y,-5x²,2x²y的和,列算式为___,化简后的结果是____求具体内容,运算结果和过程,怎样做题](/uploads/image/z/401725-37-5.jpg?t=%E5%8D%95%E9%A1%B9%E5%BC%8F-3x%26%23178%3B%E5%87%8F%E5%8E%BB%E5%8D%95%E9%A1%B9%E5%BC%8F-4x%26%23178%3By%2C-5x%26%23178%3B%2C2x%26%23178%3By%E7%9A%84%E5%92%8C%2C%E5%88%97%E7%AE%97%E5%BC%8F%E4%B8%BA___%2C%E5%8C%96%E7%AE%80%E5%90%8E%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF____%E6%B1%82%E5%85%B7%E4%BD%93%E5%86%85%E5%AE%B9%2C%E8%BF%90%E7%AE%97%E7%BB%93%E6%9E%9C%E5%92%8C%E8%BF%87%E7%A8%8B%2C%E6%80%8E%E6%A0%B7%E5%81%9A%E9%A2%98)
单项式-3x²减去单项式-4x²y,-5x²,2x²y的和,列算式为___,化简后的结果是____求具体内容,运算结果和过程,怎样做题
单项式-3x²减去单项式-4x²y,-5x²,2x²y的和,列算式为___,化简后的结果是____
求具体内容,运算结果和过程,怎样做题
单项式-3x²减去单项式-4x²y,-5x²,2x²y的和,列算式为___,化简后的结果是____求具体内容,运算结果和过程,怎样做题
算式是-3x²-[-4x²y+(-5x²)+2x²y]
-3x²-[-4x²y+(-5x²)+2x²y]
=-3x²+4x²y-(-5x²)-2x²y
=-3x²+4x²y+5x²-2x²y
=2x²+2x²y
列算式为:
-3x²-(-4x²y-5x²+2x²y)
化简后的结果是:2x²+2x²y
-3x²-(-4x²y-5x²+2x²y)
=-3x²+4x²y+5x²-2x²y
=-3x²+5x²+4x²y-2x²y
=2x²+2x²y