Question

-Calculati media geometrica a urmatoarelor numere:
A) 10√2-√7 totul supra 8 & √200+√7 totul supra 2.
B) 5√2+3√18-2√50 & 6√2/3+√98/5.
-Vreau rezolvarea completa !

Answer 1

A) (10√2-√7)/8    si   (√200+√7) /2
mg=√(10√2-√7)/8  ×(√200+√7) /2=√(10√2-√7)/8  ×(10√2+√7) /2=
=√(200-7)/16=√193/√16=(√193)/4

 B) 5√2+3√18-2√50  si  6√2/3+√98/5.
mg=√(5√2+3√18-2√50)×(6√2/3+√98/5)=
=√(5√2+9√2-10√2)×(6√2/3+7√2/5)=
=√(4√2)×(30√2+24√2)/15=
=√(4√2)×54√2/15=
=√432/15=√144/5=
=12/√5=12√5/5