jednym z rozwiązań równania lx+2l=a jest liczba -6.Wyznacz drugie rozwiązanie tego równania.
l x + 2 l = a , x = -6
I - 6 + 2 I = a
I - 4 I = a
a = 4
l x + 2 l = 4
x + 2 = 4 ∨ x + 2 = - 4
x = 2 x = - 6
odp. x₂ = 2
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l x + 2 l = a , x = -6
I - 6 + 2 I = a
I - 4 I = a
a = 4
l x + 2 l = 4
x + 2 = 4 ∨ x + 2 = - 4
x = 2 x = - 6
odp. x₂ = 2