Question

Determine as razões da função y = - x² - 4x - 3

Answer 1

Δ=b^2-4.a.c
Δ=(-4)^2-4.(-1).(-3)
Δ=16-12
Δ=4

x= -b+-√Δ
---------------
2.a

x= -(-4)+-√4
---------------
2.(-1)

x1= 4+2 6
--------- = -------- = -3
-2 -2

x2= 4-2 2
-------- = ------ = -1
-2 -2