find k for which quadratic polynomial 2x²-kx+k=0 have equal roots. – InterviewSolution

1.

find k for which quadratic polynomial 2x²-kx+k=0 have equal roots.

Answer»

2x^2 -kx +k =0 .

equal roots condition B^2 -4AC=0

From equation A= 2 ;B= K ; C= k

k^2 - 4 (2)(k)=0 k^2 -8k=0 K^2=8k k=8. or k(k-8)=0 k=0

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