作业帮先化简,再求值:[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2,其中a=-5
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/15 07:58:27
![先化简,再求值:[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2,其中a=-5](/uploads/image/z/4336143-15-3.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%3A%5B5a%5E4%2Aa%5E2-%283a%5E6%29%5E2%2F%28a%5E2%29%5E3%5D%2F%28-2a%5E2%29%5E2%2C%E5%85%B6%E4%B8%ADa%3D-5)
先化简,再求值:[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2,其中a=-5
先化简,再求值:[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2,其中a=-5
先化简,再求值:[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2,其中a=-5
[5a^4*a^2-(3a^6)^2/(a^2)^3]/(-2a^2)^2
=(5a^6-9a^12/a^6)/(4a^4)
=(5a^6-9a^6)/(4a^4)
=-4a^6/(4a^4)
=-a^2