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klemol [59]
4 years ago
8

If (x + 2) is a factor of x3 – 19x – p, find the value of p. Help please​

Mathematics
1 answer:
Sergio039 [100]4 years ago
3 0

If x-a is a factor of a polynomial P(x) then, a is its root.

So -2 is a root of x^3-19x-p

(-2)^3-19\cdot(-2)-p=0\\-8+38-p=0\\p=30

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