Question

if A
and B are zeroes of the
polynomial f(x)=x²-x-K such
that a- B =9 find K.
​

Answer 1

Answer:

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Answer 2

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