The value of k , for which the roots of x^2+kx-1=0 are real and unequal is
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Answered by
2
Answer:
Given x
2
+kx+k
roots are real & equal
∴b
2
−4ac=0
=(k)
2
−4(1)(k)=0
=k
2
−4k=0
=k(k−4)=0
∴ k = 0 or k = 4
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Answered by
2
Answer:
Given x
2
+kx+k
roots are real & equal
∴b
2
−4ac=0
=(k)
2
−4(1)(k)=0
=k
2
−4k=0
=k(k−4)=0
∴ k = 0 or k = 4
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