1
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If p and q are the non-zero roots of the equation x2 + px + q = 0, then how many possible values can q have?
A
Nil
B
One
C
Two
D
Three
2
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
Consider all the real roots of the equation x4 - 10x2 + 9 = 0. What is the sum of the absolute values of the roots?
A
4
B
6
C
8
D
10
3
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If the roots of the equation 4x2 - (5k + 1)x + 5k = 0 differ by unity, then which one of the following is a possible value of k?
A
-3
B
-1
C
$-\frac{1}{5}$
D
$-\frac{3}{5}$
4
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If α and β are the roots of the equation 4x2 + 2x - 1 = 0, then which one of the following is correct?
A
β = -2α2 - 2α
B
β = 4α3 - 3α
C
β = α2 - 3α
D
β = -2α2 + 2α
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