Question

Evaluate the function f(x) = –2x2 – 3x + 5 for the input value –3.

A. −22
B.–4
C. 2
D. 32

Answer 1

f(x) = -2x² - 3x + 5

f(-3) = -2(-3)² - 3(-3) + 5

f(-3) = -18 + 9 + 5

f(-3) = -9 + 5

f(-3) = (-4)

Hence

The Solution is (-4).

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Answer 2

Given:

Given function f(x) = -2x² - 3x + 5

To find:

The value of the function for the input value of -3.

Solution:

To find the value of the function for the input value of -3, let us first substitute the value of x with -3 in the given function. The given function is as follows:

f(x) = -2x² - 3x + 5

Now, on substituting we get:

f(-3) = -2(-3)² - 3(-3) + 5

On simplifying we get:

f(-3) = -18 + 9 + 5

f(-3) = -9 + 5

f(-3) = -4

Thus, the value of the function for the input value of -3 will be -4.