1003118110 | math4u.vsb.cz

SubArea:

Expressions with exponents and radicals

Level:

Project ID:

1003118110

Accepted:

1

Clonable:

0

Easy:

0

Let

\frac{u \sqrt{5}}{5 - \sqrt{5}} = \frac{\frac{5 + \sqrt{5}}{\sqrt{5} + 1}}{1 - \sqrt{5}}

. What is the reciprocal of

u

?

\frac{1}{u} = - \frac{\sqrt{5}}{5}

\frac{1}{u} = \frac{1}{\sqrt{5}}

\frac{1}{u} = \frac{5}{\sqrt{5}}

\frac{1}{u} = - \sqrt{5}