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Multiple choice

If x3 + 6x2 + 4x + k is exactly divisible by (x + 2), then the value of k is

    • 8
    • 7
    • 6
    • 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

x + 2 is a factor             x = - 2 makes it zero

(-2)3 + 6(-2)2 + 4(-2) + k = 0       i.e k = - 8

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