Question

fatorando-se 4 x ao quadrado + 12 x + 9 , o que obtemos ?

Answer 1

4x²+12x+9=0                            Δ=b²-4·a·c
a=4 b=12 c=9                           Δ-12²-4·4·9
x=-b±√Δ/2·a                             Δ=0

x'=-12+0/2·4=-6/4
x''=-12-0/2·4=-6/4

4(x+6/4)(x+6/4)