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受欢迎的代数 >

化简 243^{1/3}

解答

化简

24 3^{\frac{1}{3}}

解答

3 \cdot 3^{\frac{2}{3}}

+1

十进制

6.24025 \dots

求解步骤

24 3^{\frac{1}{3}}

243

质因数分解:

3^{5}

= (3^{5})^{\frac{1}{3}}

使用指数法则:

a^{b + c} = a^{b} \cdot a^{c}

3^{5} = 3^{3} \cdot 3^{2}

= (3^{3} \cdot 3^{2})^{\frac{1}{3}}

使用指数法则:

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

(3^{3} \cdot 3^{2})^{\frac{1}{3}} = (3^{3})^{\frac{1}{3}} (3^{2})^{\frac{1}{3}}

= (3^{3})^{\frac{1}{3}} (3^{2})^{\frac{1}{3}}

(3^{3})^{\frac{1}{3}} = 3

= 3 (3^{2})^{\frac{1}{3}}

使用指数法则:

(a^{b})^{c} = a^{b c}, a \geq 0

(3^{2})^{\frac{1}{3}} = 3^{2 \cdot \frac{1}{3}}

= 3 \cdot 3^{2 \cdot \frac{1}{3}}

2 \cdot \frac{1}{3} = \frac{2}{3}

= 3 \cdot 3^{\frac{2}{3}}

流行的例子

5 x - 1 = 4 x + 3

化简 (27/64)^{2/3}

s im pl i f y (\frac{27}{64})^{\frac{2}{3}}

- 16 = 8 x

2 d + 4 = 10 + 2.5 d

s im pl i f y 28 \cdot 2