Question

write the roaster form of B={x:x²=4&x€z}​

Answer 1

Step-by-step explanation:

ANSWER

We observe that the squares of integers 0,±1,±2,±3,±4 are less than 20. Therefore,the set A in roster form is A={−4,−3,−2,−1,0,1,2,3,4}.

Answer 2

Answer:

B = { -2, 2 }

Step-by-step explanation:

Here, x²=4

Hence, x = -2 or x = 2.

Since, x € Z, Set B will be having both -2 & 2 as its elements.

Hope u find my answer useful.... :)