Chapter 4.7, Problem 72SR

To determine

To solve: the expression as mentioned in the problem.

Answer to Problem 72SR

The value of the mentioned function is $-26$ .

Explanation of Solution

Given information:

The expression mentioned is $f\left(x\right)=-4x^2+x-8$ for $f\left(-2\right)$ .

Formula used:

We will replace $x$ by$-2$.

Calculation:

Consider the expression as mentioned below

  $f\left(x\right)=-4x^2+x-8$ .

Here variable is $x\&y$ in the mentioned expression above.

Recall that we will replace $x$ by $-2$ .

Therefore

The mentioned equation $f\left(x\right)=-4x^2+x-8$ will be $f\left(-2\right)=-4{\left(-2\right)}^2-2-8\Rightarrow -16-10=-26$ .

Therefore the value of the mentioned function is $-26$ .