What is (sqrt(72)-3)/(21) ?

The solution to (sqrt(72)-3)/(21) is (2sqrt(2)-1)/7

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify (sqrt(72)-3)/(21)

simplify

\frac{72 - 3}{21}

\frac{2 2 - 1}{7}

Decimal Notation

0.26120 \dots

Solution steps

\frac{72 - 3}{21}

72 = 62

= \frac{6 2 - 3}{21}

Factor out common term

3 : 3 (22 - 1)

= \frac{3 ( 2 2 - 1 )}{21}

Factor the number:

21 = 3 \cdot 7

= \frac{3 ( 2 2 - 1 )}{3 \cdot 7}

Cancel the common factor:

3

= \frac{2 2 - 1}{7}

- x \cdot x^{3}

2 x - 1 x

4 \times 12

- 8 - \frac{1}{2}

\frac{1}{2} \times \frac{π}{2}