If k+9; K -6,4 are in G.P find
the value of K.
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Answer:
they are all in /GP so common ratio is same
thus . k-6 / k-9 = 4 / k-6
(k-6)^2 = 4k - 36
K^2 +36 -12k = 4k-36
k^2 -16k +72 = 0
k = 16±√256-288 /2 = 16±√-32 / 2 = 8±i2√2
Step-by-step explanation:
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