find a value of k if the quadratic equation 3x2-k√3x+4 =0 has equal roots
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Answered by
10
given eqn 3x2-k√3x+4=0
here a=3 b= -k√3 c=4
For equal roots
b sq = 4 ac
3k sq= 4.3.4
k sq=14
k=4 ans
here a=3 b= -k√3 c=4
For equal roots
b sq = 4 ac
3k sq= 4.3.4
k sq=14
k=4 ans
Answered by
10
Nice Question and here the answer-
Given,
3x^2-k(root3)x+4=0
Now discriminant = b^2-4ac
3k^2- 4(3*4)=0
3k^2- 48=0
3k^2= 48
k^2= 48/3
k^2= 16
k= 4
Given,
3x^2-k(root3)x+4=0
Now discriminant = b^2-4ac
3k^2- 4(3*4)=0
3k^2- 48=0
3k^2= 48
k^2= 48/3
k^2= 16
k= 4
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