Question

Given the function f(x) = −2x2 + 4x − 7, find f(−4). −55 −7 9 25

Answer 1

Answer:

Option (a) is correct.

The value of function $f(x) = -2x^2 + 4x- 7$ at x = -4 is -55

Step-by-step explanation:

  Given : $f(x) = -2x^2 + 4x- 7$

We have to find the value at f(-4) and choose the correct option from the given options.

Consider the given function $f(x) = -2x^2 + 4x- 7$

Since, we have to find the value of f(-4) that is value of f(x) at x = -4

Substitute, value of x = -4 in given function, we have,

$f(-4) = -2(-4)^2 + 4(-4)- 7$

Simplify, we have,

$f(-4) = -55$

Thus, the value of function $f(x) = -2x^2 + 4x- 7$ at x = -4 is -55

Option (a) is correct.

Answer 2

Is -55 I just took the test