Question

1- Aplicando a fatoração em X2 + X – 6, encontramos:
(a) (x – 1).(x + 6)
(b) (x – 2).(x + 3)
(c) (x – 6).(x – 1)
(d) (x – 1).(x + 1)

Answer 1

b
pfv coloca como melhor resposta

Answer 2

Resposta: letra B.
Explicação passo-a-passo:
X^2+x-6
A=1 B=1 C=-6
X= -b+-\/´´b^2-4.a.c´
´´´´´´´´´´´´´´´´2´´´´´´´´´´´´´´´´´´
X= -1 +-\/´´´1-4.1.(-6)
´´´´´´´´´´´´´´2.1`````````````````
X= -1 +-\/´´´1+ 24´´´´´
´´´´´´´´´´´´´´´2´´´´´´´´´´´´´´
X= -1 +-\/´´´25
´´´´´´´´´´´´´2´´´´´´´´´´´
X= -1 +-5
´´´´´´´´2´´´´´´´´´´
X1= -1+5= 4 ÷2 = 2
´´´´´´´´´2´´´´´
X2= -1 -5 = 6÷2 = 3
´´´´´´´´´2´´´´´´
( x -2) . (x +3)