Question
Mathematics Question on Quadratic Equations
If x2+kx+1=0 has a root x=1 then k=____
A
1
B
2
C
3
D
-2
Answer
-2
Explanation
Solution
The correct option is (D): -2
If x2+kx+1=0 has a root x=1 then k=____
1
2
3
-2
-2
The correct option is (D): -2