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同学们,我们主要学习了幂的三条运算性质,分别是同底数幂的乘法、幂的乘方与积的乘方,用公式表示如下:am·an=am+n;(am)n=amn;(ab)n=an·bn。这三条性质在解题中不但可以正向运用,而且可以逆向运用,逆向运用这三条性质其灵活性更大,往往会收到意想不到的效果。下面举例加以说明。
Students, we mainly study the power of the three computing properties, namely the power multiplication with the end of the power of the power and product of the power, the formula is as follows: am · an = am + n; (am) n = amn ; (ab) n = an · bn. These three properties can not only be used positively but also reversely in the problem solving, and the more flexible use of the three properties in the reverse direction often results in unexpected results. The following example to illustrate.