Question

if the one of quadratic polynomial ( k-1)x²+kx+1 is 4 then the value of k id​

Answer 1

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Answer 2

Putting x=4

(k-1)4*2 +4k+1=0 (as 4 is one of the zero)

(k-1)16+4k+1

16k-16+4k +1=0

20k-15=0

20k=15

K=15/20

K=3/4