Question

(V27+V12-V75)×V3 = ? |3-V5|+|V5+V3|+|V3+2|= ? ( 2V8+3V18-13V2) × 1/V2 = ? TE ROG !!!!!!
Dau coroană V= Radical
| =Modul

Answer 1

$( \sqrt{27}+ \sqrt{12}- \sqrt{75})* \sqrt{3}=(3 \sqrt{3}+2 \sqrt{3}-5 \sqrt{3})* \sqrt{3}=$$(3+2-5)* \sqrt{3} =0 \sqrt{3}=0$

$|3- \sqrt{5}|+| \sqrt{5}+ \sqrt{3}|+| \sqrt{3}+2|= 3- \sqrt{5}+ \sqrt{5}+ \sqrt{3}+ \sqrt{3}+2$$=5+2 \sqrt{3}$ ≈ 8.4641

$(2 \sqrt{8}+3 \sqrt{18}-13 \sqrt{2})* \frac{1}{ \sqrt{2} }= (4 \sqrt{2}+9 \sqrt{2}-13 \sqrt{2})* \frac{1}{ \sqrt{2} }=0*\frac{1}{ \sqrt{2} }=0$