zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

展开 2*4/9

解答

展开

2 \cdot \frac{4}{9}

解答

\frac{8}{9}

+1

十进制

0.88888 \dots

求解步骤

2 \cdot \frac{4}{9}

将项转换为分式:

2 = \frac{2}{1}

= \frac{2}{1} \cdot \frac{4}{9}

分式相乘:

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

= \frac{2 \cdot 4}{1 \cdot 9}

数字相乘:

2 \cdot 4 = 8

= \frac{8}{1 \cdot 9}

数字相乘:

1 \cdot 9 = 9

= \frac{8}{9}

流行的例子

展开 2pi(x-pi)

e x p an d 2 π (x - π)

展开 (4-x+x^2)^5

e x p an d (4 - x + x^{2})^{5}

展开 ((x^4+1)^3)/(x^6)

e x p an d \frac{( x ^{4} + 1 ) ^{3}}{x ^{6}}

展开-3pi(3*2^{1/2}-5)

e x p an d - 3 π (3 \cdot 2^{\frac{1}{2}} - 5)

展开 (t-e^{2t})(3+2e^{2t})

e x p an d (t - e^{2 t}) (3 + 2 e^{2 t})