If (x 6)in the HCF of x-2x-24 and x-ka-6 then value of k is
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0
Answer:
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Answered by
1
Answer:
k=5
Step-by-step explanation:
Given that, (x - 6) is the HCF of x2 - 2x - 24 and x2 - kx - 6 i.e., (x - 6) is a factor of both expressions.
Let f (x1) = x12 - 2x1 - 24
and f (x2) = x22 - kx2 - 6
Now f(x1) = f (x2) at (x1 = x2 = 6)
⇒ (6)2 - 2(6) - 24 = (6)2 - k(6) - 6 [by condition]
⇒ 0 = 30 - 6k ⇒ 6 k = 30
∴ k = 5
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