Write the solution set of the equation ${x^2} + x - 2 = 0$ in roster form.
Write the solution set of the equation ${x^2} + x - 2 = 0$ in roster form.
The given equation can be written as
$\left( {x - 1} \right)\left( {x - 2} \right) = 0,$ i.e., $x=1,-2 $
Therefore, the solution set of the given equation can be written in roster form as $\{ 1, - 2\} $
Similar Questions
Which of the following are examples of the null set
$\{ y:y$ is a point common to any two parallellines $\} $
Which of the following are examples of the null set
$\{ y:y$ is a point common to any two parallellines $\} $
Let $S=\{1,2,3,4\}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to
Let $S=\{1,2,3,4\}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to
- [IIT 2010]
Write the following sets in roster form :
$D = \{ x:x$ is a prime number which is divisor of $60\} $
Write the following sets in roster form :
$D = \{ x:x$ is a prime number which is divisor of $60\} $
Which of the following sets are finite or infinite.
$\{1,2,3 \ldots .\}$
Which of the following sets are finite or infinite.
$\{1,2,3 \ldots .\}$
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\{\varnothing\} \subset A$
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\{\varnothing\} \subset A$