Question

упростите:
а)3 √(2)+√50-√18
б) (2√5)-√25)*√3-2√15

Answer 1

$3 sqrt{2}+ sqrt{50} - sqrt{18} =3 sqrt{2} +5 sqrt{2} -3 sqrt{2} =5 sqrt{2}$

$(2 sqrt{5} - sqrt{25})* sqrt{3} -2 sqrt{15} =2 sqrt{15}-2 sqrt{15} -5 sqrt{3} =-5 sqrt{3}$