Question

2x+y=5 com raiz quadrada.


X__Y

-3

Answer 1

Resposta:

se for

2x+y=√5 (i)

x-y=-3  (ii)

(i)+(ii)

3x=√5-3

x=(√5-3)/3

y=x+3 = (√5-3)/3+3=√5/3+2