Find the Power Set A=(2,1,-4,-9)

$A = (2, 1, - 4, - 9)$

Step 1

The power set of a set $S$ is the set of all subsets of $S$ . The first subset will be set $S$ itself. Next, find all subsets that contain one less element (in this case $3$ elements). Continue with this process until finding all subsets including the empty set.

Power Set = ${{- 9, - 4, 1, 2}, {1, - 4, - 9}, {2, 1, - 4}, {2, 1, - 9}, {2, - 4, - 9}, {1, - 4}, {1, - 9}, {2, 1}, {2, - 4}, {2, - 9}, {- 4, - 9}, {1}, {2}, {- 4}, {- 9}, {}}$

Find the Power Set A=(2,1,-4,-9)

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