Question

Encontre as raízes (valor de x)das equações do 2° grau incompleta abaixo:
-3 x^2+ 27 = 0
ME RESPONDAM AÍ POR FAVORRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrrr ​

Answer 1

Resposta:

-3 x^2+ 27 = 0

-3x²=-27

x²=9

x= ±√9

x=±√(3²)

x=±3