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If the equation (k^2 - 5k + 6)x^2 + (k^2 - 7k + 12)x + k^2 - 9 = 0 satisfy more than two values of x, then the value of k is
option
a) -3
b) 3
c) 2
d) 4
Read Solution (Total 3)
-
- Ans = 3
any quadratic equation of power 2 satisfying more than two values of x then it might be satisfy x=0;
putting x=0;
k2=9
k=+3, -3
-3 is not supporting so K=3 - 11 years agoHelpfull: Yes(10) No(1)
- if the eq yields two values of x
then b^2 - 4ac > 0
that is done in option a only i.e. -3 - 11 years agoHelpfull: Yes(3) No(1)
- why -3 is not supporting....(-3)^2=9 also
- 11 years agoHelpfull: Yes(2) No(2)
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