Question

4x ao quadrado menos 12x mais 9 = 0

Answer 1

4x^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=12-0/8
x=12/8 (:4)
x=3/2