What is expand-(2(sqrt(19)-1))/9 ?

The solution to expand-(2(sqrt(19)-1))/9 is -(2sqrt(19))/9+2/9

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expand-(2(sqrt(19)-1))/9

expand

- \frac{2 ( 19 - 1 )}{9}

- \frac{2 19}{9} + \frac{2}{9}

Decimal Notation

- 0.74642 \dots

Solution steps

- \frac{2 ( 19 - 1 )}{9}

Expand

2 (19 - 1) : 219 - 2

= - \frac{2 19 - 2}{9}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{2 19 - 2}{9} = - (\frac{2 19}{9}) - (- \frac{2}{9})

= - (\frac{2 19}{9}) - (- \frac{2}{9})

Remove parentheses:

(a) = a, - (- a) = a

= - \frac{2 19}{9} + \frac{2}{9}

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What is expand-(2(sqrt(19)-1))/9 ?
The solution to expand-(2(sqrt(19)-1))/9 is -(2sqrt(19))/9+2/9