a) [tex] \sqrt{6}* \sqrt{5}= \sqrt{6*5}= \sqrt{30}; [/tex]; [tex] \sqrt{7}* \sqrt{12}= \sqrt{7*12}= \sqrt{7*4*3}=2 \sqrt{21} [/tex]; [tex] \sqrt{15}* \sqrt{3}= \sqrt{15*3}= \sqrt{5*3*3}= \sqrt{ 3^{2}*5 }=3 \sqrt{5} [/tex];
[tex] \sqrt{3}* \sqrt{24}= \sqrt{3*24} = \sqrt{72}= \sqrt{36*2}=6 \sqrt{2} [/tex]
[tex] \sqrt{6}* \sqrt{14}= \sqrt{6*14}= \sqrt{84}= \sqrt{4*21}=2 \sqrt{21} [/tex]
si nu mai trimite poze rasturnate!
