Question

determine dois numeros que tenham soma 14 e soma de quadrados 100

Answer 1

Resposta:

x+y=14

x²+y²=100

x=14-y

(14-y)²+y²=100

196+y²-28y+y²=100

2y²-28y=100-196

2y²-28y+96=0

y²-14y+48=0

y=14+_²V196-192/2

y=14+-²V4/2

y=14+-2/2

y=14+2/2=8

y=14-2/2=6

Resp:8e 6