10th quadratic
Quiz by Kala Vijayan
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- Q 1/10Score 0
The roots of the quadratic equation 6x² – x – 2 = 0 are
29
- Q1
The roots of the quadratic equation 6x² – x – 2 = 0 are
30s - Q2
The equation 2x² + kx + 3 = 0 has two equal roots, then the value of k is
30s - Q3
The sum of the roots of the quadratic equation 3×2 – 9x + 5 = 0 is
-3
6
2
3
30s - Q4
f the roots of ax2 + bx + c = 0 are in the ratio m : n, then
mnb² = (m – n)² ac
mna² = (m + n) c²
mn b² = (m + n)² ac
mnb² = (m + n) ac
30s - Q5
If one root of the equation x² + px + 12 = 0 is 4, while the equation x² + px + q = 0 has equal roots, the value of q is
4
49/4
4/49
49
30s - Q6
αand β are the roots of 4x² + 3x + 7 = 0, then the value of 1/α + 1/β
4/7
3/7
-3/7
7/3
30s - Q7
The equation 12x² + 4kx + 3 = 0 has real and equal roots, if
4
30s - Q8
If the roots of the equations ax² + 2bx + c = 0 and bx² – 2√ac x + b = 0 are simultaneously real, then
b=ac
b2=ac
c2=ab
a2=bc
30s - Q9
(x2 + 1)2 – x2 = 0 has
one real root.
no real roots
four real roots
two real roots
30s - Q10
The value of
-3
3
4
3.5
30s
