zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的初等代数 >

2× 22/7 × 7^2

解答

2 \cdot \frac{22}{7} \cdot 7^{2}

解答

308

求解步骤

2 \cdot \frac{22}{7} \cdot 7^{2}

遵循 PEMDAS 运算顺序

计算幂值

7^{2} : 49

7^{2}

7^{2} = 49

= 49

= 2 \cdot \frac{22}{7} \cdot 49

乘除（左右）

2 \cdot \frac{22}{7} \cdot 49 : 308

2 \cdot \frac{22}{7} \cdot 49

2 \cdot \frac{22}{7} = \frac{44}{7}

2 \cdot \frac{22}{7}

将项转换为分式:

2 = \frac{2}{1}

= \frac{2}{1} \cdot \frac{22}{7}

使用分式法则:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{2 \cdot 22}{1 \cdot 7}

数字相乘:

2 \cdot 22 = 44

= \frac{44}{1 \cdot 7}

数字相乘:

1 \cdot 7 = 7

= \frac{44}{7}

= \frac{44}{7} \cdot 49

\frac{44}{7} \cdot 49 = 308

\frac{44}{7} \cdot 49

将项转换为分式:

49 = \frac{49}{1}

= \frac{44}{7} \cdot \frac{49}{1}

使用分式法则:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{44 \cdot 49}{7 \cdot 1}

消掉

\frac{44 \cdot 49}{7 \cdot 1} : 308

\frac{44 \cdot 49}{7 \cdot 1}

数字相乘:

7 \cdot 1 = 7

= \frac{44 \cdot 49}{7}

数字相除:

\frac{49}{7} = 7

= 44 \cdot 7

数字相乘:

44 \cdot 7 = 308

= 308

= 308

= 308

= 308

流行的例子

6 + 5^{2}

2^{3} - (- 3)^{3}

- 3^{2} + (- 3)^{2}

(3/4) + (7/4)

-16(1)^2+40(1)+5

- 16 (1)^{2} + 40 (1) + 5