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JAMB - Mathematics (1997 - No. 9)
If the function f(fx) = x
3
+ 2x
2
+ qx - 6 is divisible by x + 1, find q
-5
-2
2
5
Forklaring
x + 1 = 0, x = -1; f(x) = x
3
+ 2x
2
+ qx - 6
0 = -1 + 2 - q - 6
q = -5
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