Question

$\sqrt{9 ^{2}+12 ^{2} } - \sqrt{121}$
va rog ajutati-ma si explicati-mi. Maine am test si vreau sa iau macar 6.

Answer 1

Rad (9^2+1^2)-Rad 121=rad(81+144)-Rad11^2=rad225-rad11^2=rad15^2-rad11^2=
=15-11=4

Answer 2

radical (81+144)-radical(121)=radical(225)-radical(121)=15-11=4
Atentie! Mai intai calculezi suma si apoi extragi radicalul!
Succes!