Question

write the following in roster form { x:x is and integer x²-9=0}
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Answer 1

Answer:

Roster form :- { -3, 3 }.

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Answer 2

The roaster form is $\{-3,3\}$.

Step-by-step explanation:

To find : Write the following in roster form { x:x is and integer x²-9=0} ?

Solution :

Roster form of a set is a list of elements that are in the set.

The set we have given is

$S=\{ x:x \text{ is and integer } x^2-9=0\}$

Now to get elements we solve the equation,

$x^2-9=0$

$x^2=9$

$x=\pm\sqrt{9}$

$x=\pm 3$

The roaster form is $\{-3,3\}$.

#Learn more

Write the following sets in roster form

A= {x:x is an integer -3<x<7}​

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