Question

Exercícios de função quadratura

Y = - x² -x + 6

Answer 1

Resposta:

-x² -x + 6 = 0

∆ = b²-4ac

∆ = (-1)²-4.(-1).6

∆ = 1+24

∆ = 25

x = -b±√∆/2a

x' = -(-1)-5/2.(-1)

x' = 1-5/-2

x' = -4/-2

x' = 2

x" = -(-1)+5/2.(-1)

x" = 1+5/-2

x" = 6/-2

x" = -3

S = {-3, ; 2}