Question

c))4x2 - 12x + 9 = 0​

Answer 1

Resposta:

x^2+12x+9=0

delta=b^2-4ac

delta=12^2-4.4.9

delta=144-144

delta=0

x=-b-/+ raiz de delta/2a

x=-12-0/2.4

x=-12/8 (:4)

x=-3/2

Explicação passo-a-passo: