计算:3x²•(-3xy)²-x²•(x²y²-2x)要过程
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 11:51:16
![计算:3x²•(-3xy)²-x²•(x²y²-2x)要过程](/uploads/image/z/759171-3-1.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A3x%26%23178%3B%26%238226%3B%EF%BC%88-3xy%EF%BC%89%26%23178%3B-x%26%23178%3B%26%238226%3B%EF%BC%88x%26%23178%3By%26%23178%3B-2x%EF%BC%89%E8%A6%81%E8%BF%87%E7%A8%8B)
计算:3x²•(-3xy)²-x²•(x²y²-2x)要过程
计算:3x²•(-3xy)²-x²•(x²y²-2x)要过程
计算:3x²•(-3xy)²-x²•(x²y²-2x)要过程
3x²•(-3xy)²-x²•(x²y²-2x)
=3x²•9x²y²-x²•x²y²+x²•2x
=26x⁴2y²+2x³
原式=3x^2*9x^2y^2-x^4y^2+2x^3
=-x^4y^2+27x^4y^2+2x^3
=-26x^4y^2+2x^3