Question

Помогите пожалуйста (((
678

Answer 1

1)a^2-3/a-$sqrt{3}$=(a^2-3)(a+$sqrt{3}$)/a^2-3=a+$sqrt{3}$
2)
3)$sqrt{5}$+5/$sqrt{5}$=$sqrt$5+5/5=$sqrt$5(1+1)/5=$sqrt{2}$
4)7$sqrt{2} -2/3 sqrt{2} =7 sqrt{0} /3 sqrt{2} =7*0/3 sqrt{2} =0/3 sqrt{2} =0$