Review question

# Given five numbers of the form $a-b\sqrt{c}$, which is smallest? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R9229

## Suggestion

Which of the following is smallest?

A)$10 - 3\sqrt{11} \qquad$ B) $8-3\sqrt{7} \qquad$ C) $5-2\sqrt{6} \qquad$ D) $9-4\sqrt{5} \qquad$ E) $7-4\sqrt{3}$

Given $a - b\sqrt{c}$, how could we write this as $\sqrt{d}-\sqrt{e}$ for some $d$ and $e$?