作业帮[(-3xy)².x⁴-2x²(3xy²)².y／2]÷(-3x²y)²
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/07 11:06:53
![[(-3xy)².x⁴-2x²(3xy²)².y／2]÷(-3x²y)²](/uploads/image/z/2097327-39-7.jpg?t=%5B%28-3xy%29%26%23178%3B.x%26%238308%3B-2x%26%23178%3B%283xy%26%23178%3B%29%26%23178%3B.y%EF%BC%8F2%5D%C3%B7%28-3x%26%23178%3By%29%26%23178%3B)
[(-3xy)².x⁴-2x²(3xy²)².y／2]÷(-3x²y)²
[(-3xy)².x⁴-2x²(3xy²)².y／2]÷(-3x²y)²
[(-3xy)².x⁴-2x²(3xy²)².y／2]÷(-3x²y)²
原式=(9x^6y²-9x^4y^5)÷(9x^4y²)
=9x^6y²÷(9x^4y²)-9x^4y^5÷(9x^4y²)
=x²-y³