Question

exercitiul 4 de la subiectul 2 va rog

Answer 1

ab/16=(a+b)/12=(a-b)/4

4a+4b=12a-12b

16b=8a

2b=a

a=2b

2b(b+2)=16

2b^2+4b-16=0

delta=16+8*16=144=12^2

b1=(-4+12)/4=2 si a=4

b2=(-4-12)/4<0 imposibi;

b=2 si a =4