if A
and B are zeroes of the
polynomial f(x)=x²-x-K such
that a- B =9 find K.
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Answered by
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Answer:
alpha + beta = -1 a+b= -1
alpha× beta = -k ab = -k
a-b=9
a-(1-a) = 9
a-1+a=9
a=5
b= -4
ab = -k
5×-4 = -k
k= 20
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