Question

ii) If U = {x/x N,}write the union of the following
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Answer 1

Answer:

I don't know what the answers my friend

Answer 2

Step-by-step explanation:

Let "me" be the number x. It is unknown as this point.

81 divided by x = x

81/x = x

81 = x*x ... Multiply both sides by x.

81 = x^2

x^2 = 81

x = sqrt(81)

x = 9

Notice how 54/x = 54/9 = 6. So that checks out.