Question

Calculati
4 radical5+(6 radical5-7 radical5)
-(3 radical6+radical6)+11 radical6

Answer 1

4 radical 5+(6 radical 5-7 radical 5)= 4 radical 5-radical 5= 3 radical 5
-(3 radical 6+radical 6)+11 radical 6= -4 radical 6+ 11 radical 6= 7 radical 6

Answer 2

a) $4 \sqrt{5}+(6\sqrt{5}-7\sqrt{5})=4\sqrt{5}+6\sqrt{5}-7\sqrt{5}=10\sqrt{5}-7\sqrt{5}=3\sqrt{5}$
b) $-(3\sqrt{6}+\sqrt{6})+11\sqrt{6}=-4\sqrt{6}+11\sqrt{6}=7\sqrt{6}$
Success!