Download App

Sets — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsSets1 Mark
Question
Write the solution set of the equation $x^2 + x – 2 = 0$ in roster form.
✓

Answer

Here,the given equation can be written as $-(x – 1) (x + 2) = 0,$ that is $x = 1, – 2$
Therefore, the solution set of the given equation can be written in roster form as $\{1, – 2\}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from Sets→Sets — all question types→Maths STD 11 Science question papers→CBSE Board STD 11 Science question papers→CBSE Board question paper generator→

Similar questions

Write the coordinates of the centre of the circle inscribed in the square formed by the lines x = 2, x = 6, y = 5 and y = 9.
→
If A and B are two sets such that $\text{A}\subset\text{B},$ then find:$\text{A}\cap\text{B}$
→
Write the equation of the directrix of the parabola $x^2 - 4x - 8y + 12 = 0.$
→
Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow0}\frac{\text{ax}+\text{b}}{(\text{x}+\text{d})}$
→
Find out the following sentences are statements and which are not. Justify your answer.
The real number x is less than 2.
→
Is the given relation a function? Give reasons for your answe $r:s = (n, n^{2 }) | n$ is a positive integer
→
Write the set in roster form: F = The set of all letters in the word BETTER.
→
Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow3}\frac{\text{x}^4-81}{\text{x}^2-9}$
→
Which of the following sentences are statements? Justify.
15 + 8 > 23
→
Translate the following statement into symbolic form:
Students can take Hindi or English as an optional paper.
→