I need to solve this problem
I'm assuming this is equal to zero. You cannot solve unless it is equal to something.
7/x^2 - x^2/x = 0
7/x^2 - x = 0
Multiply everything by x^2 to get
7 - x^3 = 0
x^3 = 7
Take the cubed root of both sides to get
x = cubed root of 7
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