(7/3) ^-2 how can i find the value of this as an integer.

Im not sure how to sketch the graph y=9-x^2

Also..i dnt know if this will go right on here..

a=3/2 b=9-17(17 in a sqr root) c=9+17(also in sqr root)

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4 4

How can i shpw that a+b+c =abc do i need to add them all and then multiply them all and it should be the same?

Thnx