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how many value of C in the equation x^2-5x+c result in rational roots which are integer?
options
1)1
2)3
3)6
4)infinite
Read Solution (Total 5)
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- C=0,4,6 ... 3 positive values
-6 , -36, also satisfies. - 11 years agoHelpfull: Yes(4) No(0)
- I think infinite values of C are possible.
c= -14, -24, will also give integer rational roots. - 11 years agoHelpfull: Yes(3) No(0)
- 6
for an integer b^2-4ac>=0
=> (-5)^2-4(1)(c)>=0
=>c>=6 - 11 years agoHelpfull: Yes(2) No(1)
- but for a real and integer roots, b^2-4ac must be greater than or equal to 0, this clearly indicates that c cant have infinite values...
- 11 years agoHelpfull: Yes(1) No(0)
- 4). infinite
because for many value of c we get discriminant(D) >=o and fractional roots
eg. c= 6,-14,-24 ... - 11 years agoHelpfull: Yes(0) No(0)
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