Question

Упростить выражение:
3√2 1/3 - √84 - 4√5 1/4

Answer 1

$3sqrt{2frac{1}{3} }-sqrt{84}-4sqrt{5frac{1}{4} }=3sqrt{frac{7}{3} }-sqrt{4*21}-4sqrt{frac{21}{4} }=sqrt{9*frac{7}{3} }-2sqrt{21}-2*frac{sqrt{21} }{2}=sqrt{21}-2sqrt{21} -sqrt{21}=-2sqrt{21}$