Oefening 3

Bepaal de nulwaarden van de volgende veeltermen in de onbepaalde x:

a) A(x) = 3x – 2
A(x) = 0
⇔3x – 2 = 0
⇔3x = 2
⇔x = ⅔

b) B(x) = 2x2 – 5
B(x) = 0
⇔ 2x2 – 5 = 0
⇔ 2x2 = 5
⇔ x2 = 52
⇔ x = ∓√(52)

c) C(x) = -x2 – 4
C(x) = 0
⇔ -x2 – 4 = 0
⇔ -x2 = 4
⇔ x2 = – 4
no real solutions

d) D(x) = 34 x4
D(x) = 0
34 x4 = 0
⇔ x = 0

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