MCQ
If the equation $x^2-a x+1=0$ has two distinct roots, then
- A$|a|=2$
- B$|a|<2$
- ✓$|a|>2$
- DNone of these
✓
Answer
Correct option: C.
$|a|>2$
C
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The arithmetic mean of $\{1, 2, 3, ..., n\}$ is :
→Choose the correct answer from the given four options:
The first four terms of an AP, whose first term is -2 and common difference is -2, are:
The first four terms of an AP, whose first term is -2 and common difference is -2, are:
Which one of the following is not a measure of central tendency?
A pair of equations $a x+2 y=9$ and $3 x+b y=18$ represent parallel lines, where $a, b$ are integers, if
→If the sum of the zeroes of the polynomial $p(x)=\left(p^2-23\right) x^2-2 x-12$ is 1 , then $p$ takes the value(s) are
→The value of $\frac{\cos^320^\circ-\cos^370^\circ}{\sin^370^\circ-\sin^320^\circ}$ is :
→A hollow sphere of internal and external diameters $4\ cm$ and $8\ cm$ respectively is melted into a cone of base diameter$ 8\ cm$. The height of the cone is:
→In the following figure, find the length of the chord $A B$ if $P A=6 cm$ and $\angle P A B=60^{\circ}$.
→The ratio of the outer and inner perimeters of a circular path is $23 : 22$. If the path is $5$ metres wide, the diameter of the inner circle is :
→A ladder makes an angle of $60^{\circ}$ with the ground when placed against a wall. If the foot of the ladder is $2 m$ away from the wall, then the length of the ladder (in meters) is
→