Write the solution set of the equation $x^2 + x – 2 = 0$ in roster form.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → {1, – 2}
The given equation can be written as
(x – 1) (x + 2) = 0, i. e., x = 1, – 2
Therefore, the solution set of the given equation can be written in roster form as {1, – 2}.