P ( x ) x 2 6 4 0 x 2 4 0 0 0 , where x is the number of apartments rented For what values of x does the complex produce a profit

Question

P ( x )     x   2   6 4 0 x   2 4 0 0 0 , where x is the number of apartments rented  For what values of x does the complex produce a profit

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P ( x ) = - x ^ 2 + 6 4 0 x - 2 4 0 0 0 , where x is the