Please help the value -2 is lower bound for the zeros of the function below
f(x)=4x^3-12x^2-x+15
True or False

False

Step-by-step explanation:

f(x)=4x^3-12x^2-x+15

Using synthetic division

-2     4  -12   -1     15

            -8   40    -78

       4   -20  39  -63

Since this is not zero, this is not a lower bound

Step-by-step explanation:

The zeros of the function is the values at which the function crosses the x-axis.

The value -2 is not a lower bound for the zeros of the function.

g

step-by-step explanation:

step-by-step explanation:

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