计算:(-3x²y³)=_____ 计算:(9a²b-6ab²)÷(3ab)=______如果(-x+3)²=x²=ax+9 那么a=____
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 23:35:26
![计算:(-3x²y³)=_____ 计算:(9a²b-6ab²)÷(3ab)=______如果(-x+3)²=x²=ax+9 那么a=____](/uploads/image/z/5463435-3-5.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%28-3x%26%23178%3By%26%23179%3B%29%3D_____+%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%889a%26%23178%3Bb-6ab%26%23178%3B%EF%BC%89%C3%B7%EF%BC%883ab%EF%BC%89%3D______%E5%A6%82%E6%9E%9C%EF%BC%88-x%2B3%EF%BC%89%26%23178%3B%3Dx%26%23178%3B%3Dax%2B9+%E9%82%A3%E4%B9%88a%3D____)
计算:(-3x²y³)=_____ 计算:(9a²b-6ab²)÷(3ab)=______如果(-x+3)²=x²=ax+9 那么a=____
计算:(-3x²y³)=_____ 计算:(9a²b-6ab²)÷(3ab)=______
如果(-x+3)²=x²=ax+9 那么a=____
计算:(-3x²y³)=_____ 计算:(9a²b-6ab²)÷(3ab)=______如果(-x+3)²=x²=ax+9 那么a=____
(-3x²y³)=-3x²y³
(9a²b-6ab²)÷(3ab)=3a-2b
如果(-x+3)²=x²=ax+9
则:x²-6x+9=x²
6x=9
x=3/2
因:x²=ax+9
9/4=(3/2)a+9
9=6a+36
6a=27
a=9/2