The number of roots of the equation $|x{|^2} - 7|x| + 12 = 0$ is
$1$
$2$
$3$
$4$
Consider the following two statements
$I$. Any pair of consistent liner equations in two variables must have a unique solution.
$II$. There do not exist two consecutive integers, the sum of whose squares is $365$.Then,
The number of distinct real roots of the equation $|\mathrm{x}+1||\mathrm{x}+3|-4|\mathrm{x}+2|+5=0$, is ...........
If $2 + i$ is a root of the equation ${x^3} - 5{x^2} + 9x - 5 = 0$, then the other roots are
If $a < 0$ then the inequality $a{x^2} - 2x + 4 > 0$ has the solution represented by