Question

paranteza rotunda radical 18 plus radical 228inchizi paranteza minus deschizi paranteza radical 98 plus radical 200 inchizi paranteza


4 radical18plus5radical108minus2 radical 72

Answer 1

$( \sqrt{18} + \sqrt{228})-( \sqrt{98}+ \sqrt{200})= (3\sqrt{2}+2 \sqrt{57})-(7 \sqrt{2}+10 \sqrt{2})= \\ = 3\sqrt{2}+2 \sqrt{57}-7 \sqrt{2}-10 \sqrt{2}=2 \sqrt{57}-14 \sqrt{2}$

$4 \sqrt{18}+5 \sqrt{108}-2 \sqrt{72}= 4*3 \sqrt{2}+ 5*6 \sqrt{3} -2*6 \sqrt{2}= \\ =12 \sqrt{2}+30 \sqrt{3}-12 \sqrt{2}=30 \sqrt{3}$