Question

soma das raizes (×+2)(×+3)

Answer 1

(x+2).(x+3)
x²+3x+2x+6
x²+5x+6

Answer 2

= (x + 2).(x + 3)

= x² + 3x + 2x + 6

= x² + 5x + 6

Soma = - b     =  - 5     = - 5
              ------      ------ 
                a            1

(x+ 2).(x + 3) = 0
x + 2 = 0
x = - 2

x + 3 = 0
x = - 3

Soma das raízes:
= - 3 - 2
= - 5

Resp: = - 5

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