Questions
If x2 +2x +2xy + my - 3 -0 has two rational factors then the values of m will be
a
- 6, -2
b
- 6,2
c
6, -2
d
6,2
detailed solution
Correct option is C
Given expression can be rewritten as
But factors are rational ,so discriminant b2 - 4ac is a perfect square.
Now,
Now, taking (-) ve sign, we get m = 6
for +ve sign , we get m=-2
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