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## Answers

a=1

b=5k

c=16

b2-4ac<0

25k2-4x1x16<0

25k2-64<0

(5k+8)(5k-8)<0

5k+8<0

k<-8/5

k<-1.6

5k-8<0

k<1.6

Value of k=(-1.7,-1.8,-1.9...............infinity)

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a=1

b=5k

c=16

b2-4ac<0

25k2-4x1x16<0

25k2-64<0

(5k+8)(5k-8)<0

5k+8<0

k<-8/5

k<-1.6

5k-8<0

k<1.6

Value of k=(-1.7,-1.8,-1.9...............infinity)