Q.
If x2 +2x +2xy + my - 3 -0 has two rational factors then the values of m will be
see full answer
Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!
Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya
a
- 6, -2
b
- 6,2
c
6, -2
d
6,2
answer is C.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
Given expression x2+2x+2xy+my−3=0 can be rewritten as x2+2x(1+y)+(my−3)=0But factors are rational ,so discriminant b2 - 4ac is a perfect square.Now, b2−4ac=4(1+y)2−(my−3)≥0⇒ 4y2+1+2y−my+3 ≥0⇒ y2+2y−my+4 ≥0Now, taking (-) ve sign, we get m = 6for +ve sign , we get m=-2