化简 (125y^6)^{2/3}

解答

化简

(125 y^{6})^{\frac{2}{3}}

25 y^{4}

求解步骤

(125 y^{6})^{\frac{2}{3}}

使用指数法则:

(a \cdot b)^{n} = a^{n} b^{n}

(125 y^{6})^{\frac{2}{3}} = 12 5^{\frac{2}{3}} (y^{6})^{\frac{2}{3}}

= 12 5^{\frac{2}{3}} (y^{6})^{\frac{2}{3}}

12 5^{\frac{2}{3}} = 25

= 25 (y^{6})^{\frac{2}{3}}

使用指数法则:

(a^{b})^{c} = a^{b c},

假定

a \geq 0

(y^{6})^{\frac{2}{3}} = y^{6 \cdot \frac{2}{3}}

= 25 y^{6 \cdot \frac{2}{3}}

6 \cdot \frac{2}{3} = 4

= 25 y^{4}

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