The value -2 is a lower bound for the zeros of the function shown below f(x)=4x^3-12x^2-x+15 true or false

We are given

The value -2 is a lower bound for the zeros of the function shown below f(x)=4x^3-12x^2-x+15

So, firstly, we will find value of f(x) at x=-2

we will plug x=-2 into f(x)

we get

we will plug x=-2

now, we can simplify it

so,

we know that any zeros always lies between positive and negative value

Here , we got f(-3)=-63 ...which is negative value

so, this is lower bound

Hence , this is TRUE

true is the correct answer

Step-by-step explanation:

a p e x : )

the correct answer is 828.07

but there’s no any figure there!