Question

Sendo p e q dois numeros positivos, tal que p -2q=4 e p+q²=7

Answer 1

Oi

p - 2q = 4
p + q² = 7

p = 2q + 4

q² + 2q + 4 = 7

q² + 2q - 3 = 0

delta
d² = 4 + 12 = 16
d = 4

q = (-2 + 4)/2 = 2/2 = 1
p = 2q + 4 = 2*1 + 4 = 6