Question

Write answer using listing method

Answer 1

Using listing method the elements in the set are +2 and -2.

What is listing method ?

The listing approach involves writing the members of the set as a list, with commas separating the items and curly brackets enclosing the list. The rule or condition that may be used to determine if an object can belong to the set is specified when using the rule method for sets.

The members of a set are listed using this technique, with commas used to separate them and curly braces used to enclose the list. The four distinct seasons, for instance, can all be written as "Summer, Autumn, Spring, and Winter." The list's elements can be in any order, so don't worry.

We are given the set $\left\{x \mid x^2=4\right\}$

all such x such that the perfect square is 4. Now, we have

$x^2=4 \Rightarrow x=\pm 2$

Therefore, the elements in the set are +2 and -2.

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