Resposta :
V=2K+H2/5
25=2.(2,5)+H2/5
25=5+H2/5
25=25+H2/5
25+H2=25.5
25+H2=125
H2=125-25
RAIZ DE H2=RAIZ DE 100
H=+ OU - 10
25=2.(2,5)+H2/5
25=5+H2/5
25=25+H2/5
25+H2=25.5
25+H2=125
H2=125-25
RAIZ DE H2=RAIZ DE 100
H=+ OU - 10