有理数指数幂的运算法则youlishu zhishumi de yun-suan faze

❶a^m·aⁿ＝a^m+n(a> 0,m,n为有理数);

❷(am)ⁿ＝a^m·n(a> 0,m,n为有理数);

❸(ab)ⁿ＝aⁿ·bⁿ(a> 0,b> 0,n为有理数).