初二积的乘方计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 15:05:29
![初二积的乘方计算](/uploads/image/z/5906428-52-8.jpg?t=%E5%88%9D%E4%BA%8C%E7%A7%AF%E7%9A%84%E4%B9%98%E6%96%B9%E8%AE%A1%E7%AE%97)
初二积的乘方计算
初二积的乘方计算
初二积的乘方计算
1
(3X^2n)^2-4(x^2)^2n
=3^2(x^2n)^2-4(x^2n)^2
=9*7^2-4*7^2
=5*7^2=5*49=245
2
x^2x^2n(y^(n-1))^2
=x^(2n+2)*y^(2n-2)
=(-4)^(2n+2)*(1/4)^(2n-2)
=4^(2n+2)*4^(-2n+2)
=4^(2n+2-2n+2)
=4^4
=256