Issolvi 12sqrt{21/2}

$$12 \sqrt{ \frac{ 21 }{ 2 } }$$

Evalwa

$$6\sqrt{42}\approx 38.88444419$$

Passi tas-Soluzzjonijiet

Erġa' ikteb id-diviżjoni tal-għerq kwadrat \sqrt{\frac{21}{2}} bħala d-diviżjoni tal-għeruq kwadrati \frac{\sqrt{21}}{\sqrt{2}}.

$$12\times \frac{\sqrt{21}}{\sqrt{2}}$$

Irrazzjonalizza d-denominatur tal-\frac{\sqrt{21}}{\sqrt{2}} billi timmultiplika in-numeratur u d-denominatur mill-\sqrt{2}.

$$12\times \frac{\sqrt{21}\sqrt{2}}{\left(\sqrt{2}\right)^{2}}$$

Il-kwadrat ta' \sqrt{2} huwa 2.

$$12\times \frac{\sqrt{21}\sqrt{2}}{2}$$

Biex timmultiplika \sqrt{21} u \sqrt{2}, immultiplika n-numri taħt l-għerq kwadrat.

$$12\times \frac{\sqrt{42}}{2}$$

Ikkanċella l-akbar fattur komuni 2 f'12 u 2.

$$6\sqrt{42}$$