Question

Introduceti factorii sub radical ptr. numerele:
$2 \sqrt{5}$
$5 \sqrt{2}$
$- 3 \sqrt{5}$
$- 4 \sqrt{3}$
$- 3 \sqrt{7}$
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Answer 1

Răspuns:

    $2\sqrt{5}=\sqrt{2*2*5}=\sqrt{20}$

    $5\sqrt{2}=\sqrt{5*5*2}=\sqrt{50}$

    $-3\sqrt{5}=-\sqrt{3*3*5}=-\sqrt{45}$

    $-4\sqrt{3}=-\sqrt{4*4*3}=-\sqrt{48}$

    $-3\sqrt{7}=-\sqrt{3*3*7}=-\sqrt{63}$