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Kellayy Kellayy
  • 13-01-2015
  • Mathematics
Answered

if (x+2) is a factor of x^3-6x^2+kx+10, k=

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konrad509
konrad509 konrad509
  • 13-01-2015

If a binomial \((x-a)\) is a factor of a polynomial, then \(a\) is a root of this polynomial.

\((x+2)=(x-(-2)) \Rightarrow a=-2\\\\ (-2)^3-6\cdot(-2)^2+k\cdot(-2)+10=0\\ -8-24-2k+10=0\\ -2k=22\\\ \boxed{k=-11}\)

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skydreammer50923
skydreammer50923 skydreammer50923
  • 08-07-2021

Answer:

k=-11

Step-by-step explanation:

for plato

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