Respuesta :

wolf1728

-2.5 is the best approximation.  Putting this into the equation we get:

-2.5*-2.5*-2.5  -4*-2.5 +6

-15.625 + 10 + 6 = .375

Answer:  D  or  -2.5

Step-by-step explanation:

By using a graphing calculator, we can see that there is only one rational x intercept, -2.525. By simply rounding this value to the nearest tenth we get -2.5

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