Als   x = −1   dan is
x2 + x3 + x−2 + x−3 gelijk aan 		A.   −2
B.   −1
C.   0
D.   1
E.   2
    A    B    C    D    E

[ 2-8940 - op net sinds 2.11.2024-(E)- ]

Translation in   E N G L I S H

If   x = −1   then
x2 + x3 + x−2 + x−3
equals 		A.   −2
B.   −1
C.   0
D.   1
E.   2

Oplossing - Solution

x2 + x3 + x−2 + x−3 = (−1)2 + (−1)3 + (−1)−2 + (−1)−3  = 1 − 1 + 1 − 1 = 0
GWB