If one factor of x*x*x +7kx²- 4Kx + 12 is
(x+3) the the value of k is
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Answer:
Step-by-step explanation:
x³ + 7kx² - 4kx + 12
If (x + 3) is a factor
then substituting (x = -3) into the equation will return us zero.
Solve k:
(-3)³ + 7k(-3)² - 4k(-3) + 12 = 0
-27 + 63k + 12k + 12 = 0
75k - 15 = 0
75k = 15
k = 1/5
Answer: k = 1/5
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Answer:
k = 1/5
Step-by-step explanation:
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