Question

(√5-2)/(√5+2) упростить выражение

Answer 1

(√5-2)(√5-2)/(√5+2)(√5-2) = (5-4√5+4) / (5-4) =(9-4√5) /1 =9-4√5

Answer 2

(√5-2)/(√5+2)=

=(√5-2)*(√5+2)=

=5-4√5+4=

=9-4√5