Question

este urgent! ........​

Answer 1

Răspuns:

x= -√7/7   y= 10√3/21

Explicație pas cu pas:

x= √3/4(3√21-7√21)/21 = √3·(-4√21)/(4·21)= -√63/21= -3√7/21= -√7/7

y= (√63-3√3)/3  + (√147+√7)7= (7√63-21√3+3√147+3√7)/21=

(3√147-11√3)/21= (3·7√3-11√3)/21= 10√3/21