If the equation (k-2)x^2-k+4x-2 has difference of roots as 3,then find the value of k.
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hello!
let me guide u. take the roots alpha & beta.
now, alpha-beta is = +/-√D/a. find D by b^2-4ac & a is given (k-2). alpha -beta is already given 3. find k from here.
feel free to ask if any doubts are there.
Regards.
let me guide u. take the roots alpha & beta.
now, alpha-beta is = +/-√D/a. find D by b^2-4ac & a is given (k-2). alpha -beta is already given 3. find k from here.
feel free to ask if any doubts are there.
Regards.
rajusetu:
How did you get difference of roots formula?
we know what is sum of roots & the product of roots. Find from here only
use it in the formula (alpha-beta)^2 = (alpha+beta)^2 - 4alpha.beta
Thanks Dude.
no worries!
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