P(x) = x^4 - 3x^3 - 8x^2 + 12x + 16
breakeven ocuurs when P(x) = 0
so, finding the zeros of the function
x^4 - 3x^3 - 8x^2 + 12x + 16 = 0
the polynomial has possible rational roots at
x = +- { 1 , 2 , 4 , 8 , 16 }
now testing each root one by one
we find that actual root are
x = -1 , 2 , -2 , 4
so, company break even occurs when 1 laptop or 4 laptops are produced
the graph will have 2 minimums and 1 maximum
the graph will start off decreasing and and end off increasing
the profit starts to increase when they produce more than 4 laptops
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